Artifacts

Artifacts are special objects of different rarity levels that you can equip your Heroes with to increase their stats. You can store up to 500 Artifacts in total and can combine them into different sets. Each set gives you a unique bonus in addition to the stats of the item. You can equip up to six items per Hero, one per category: weapon, head, off-hand, gloves, armor, and shoes. Once equipped, they can only be removed by spending Gold.
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One of the most important features of Heroes of Chronar is that it offers players the ability to develop their characters and place them on the NFT market. 
Note that in the primary market, you can already buy some ready-made, well-developed Artifacts as NFT elements.
Effects
Each Artifact has main stats determined by its type and grade. These are displayed in the form of a percentage or a flat value. The stats will improve as the item's level increases, which will raise its value by Stat+X or Stat+%. In addition to the main stats, each item has additional stats (called sub-stats). The value of additional stats is always less than the main one. Sub-stats can never be the same as the main stat (e.g., having HP% as the main stat blocks the possibility of having HP% as an additional stat). Additionally, they cannot be duplicated (HP% cannot be a sub-stat twice on the same item). The number of initial additional stats attached to an item is determined by its rarity. Sub-stats increase at levels 3, 6, 9, and 12. If an item has less than four additional stats, the corresponding level will add a new stat (for example, an item of "Epic" rarity has three sub-stats. In this case, level 12 will add a new sub-stat). Note that Artifacts' effects only apply to the base stats of monsters, which means that bonuses are additive rather than multiplicative. In addition, stat increases that do not result in a whole number are rounded up (e.g., +99.01 becomes +100).
Sets
The following table shows the list of items, their set effects, and the drop location:
Set Icon
Set Name
Set piece required
Set effect
Drop location
Description
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Life
2
HP +15%
Greenhorn, Darkwoods
Provides a 15% HP increase based on a Hero base value for each set equipped (+45% HP with 3 sets).
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Guardian
2
DEF +15%
Naporia, Witch's Rift
Provides a 15% DEF increase based on a Hero base value for each set equipped (+45% DEF with 3 sets).
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Warrior
2
ATK +15%
Amber Sands, Ashen Grove
Provides a 15% ATK increase based on a Hero base value for each set equipped (+45% ATK with 3 sets).
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Cursed
2
ACC +30%
Cardinal Oasis, Witch's Rift
Provides a 30% ACC increase for each set equipped (+90% ACC with 3 sets).
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​
Protector
2
RES +30%
Lazurite Halls, Ashen Grove
Provides a 30% RES increase for each set equipped (+90% RES with 3 sets).
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​
Hawkeye
2
C. RATE +15%
Fawnleaf Woods, Darkwoods
Provides a 15% CRIT RATE increase for each set equipped (+45% CRIT RATE with 3 sets).
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​
Cover
2
​
Witch's Rift
Grants Immunity to the Hero for 3 turns on wave start. (9 turns with 3 sets)
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Untouchable
2
​
Witch's Rift
Grants Immunity to the Hero for 3 turns on wave start. (9 turns with 3 sets)
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Charge
2
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Events
Grants 35 Mana at the start of the battle. (100 mana with 3 sets)
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Zeal
2
​
Arena
Grants DMG increased by 2.5% for every living enemy.
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Fury
2
​
Guild Wars
Grants: DMG increased by 15% if the Hero has less than 50% HP.
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Caster
2
Mana Gain +1
Raid Bosses
Provides a 1 MANA GAIN increase for each set equipped (+3 MANA GAIN with 3 sets).
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Crusher
4
C. DMG +40%
Sacred Grove, Witch's Rift
Provides a 40% CRIT DMG increase.
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Swift
4
SPD +15%
Plateau of Rust, Ashen Grove
Provides a 12% SPD increase based on a Hero base value.
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Berserker
4
ATK +45%
HP -20%
Caldbeck Void, Darkwoods
Provides a 45% ATK increase and a 20% HP decrease based on a Hero base value.
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Mystic
4
ACC +30%
SPD +20
Malachite Pass, Witch's Rift
Provides a 30% ACC and a 15 SPD increase.
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Brave
4
DEF +20%
ATK +20%
Tenebris, Darkwoods
Provides a 20% ATK increase and a 20% DEF increase based on a Hero base value.
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Giant
4
HP +20%
C. DMG + 20%
Cursed Gate, Ashen Grove
Provides a 20% HP increase based on a Hero base value and 20% CRIT DMG increase.
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Rotten
4
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Arena
Grants 30% chance to inflict Heal Block for 3 turns whenever the Hero deals damage with their Special Ability. Can't be resisted.
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Hope
4
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Arena
Grants 25% chance to gain 50 Mana whenever the Hero uses their Special Ability.
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Vampire
4
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Witch's Rift
Recovers 35% of damage dealt as HP.
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Bandit
4
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Ashen Grove
Grants 100% chance to remove 2 positive effects from a single enemy when attacking with Gemstones.
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Daze
4
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Events
Grants 22% chance to inflict Stun for 2 turns whenever the Hero deals damage with their Special Ability.
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Determination
4
​
Guild Wars
Grants 5% Mana for every 10% missing HP at the start of the turn.
Upgrading
By using Gold Coins, you can level up your Artifacts. Leveling up will increase the main stats and increase existing additional stats or create new ones. The table below shows the chances of a successful upgrade:
Level
Success chance
1 > 3
100%
3 > 4
85%
4 > 5
70%
5 > 6
60%
6 > 7
50%
7 > 8
40%
8 > 9
30%
9 > 10
25%
10 > 11
20%
11 > 12
15%
12 > 13
10%
13 > 14
8%
14 > 15
5%
Upgrading cost
The cost of leveling-up your item depends on the number of stars it has. For that you need Gold Coins, which will be spent regardless of success or failure. Failing to upgrade will not downgrade or destroy your Artifact.
The following table contains the cost of attempting to upgrade an item:
Upgrade level
★
★★
★★★
★★★★
★★★★★
★★★★★★
+1
100
150
225
330
500
750
+2
175
300
475
680
950
1475
+3
250
450
725
1030
1400
2200
+4
400
700
1075
1480
1925
3050
+5
550
950
1425
1930
2450
3900
+6
775
1275
1875
2455
3175
4875
+7
1000
1600
2325
2980
3900
5850
+8
1300
2025
2850
3680
4750
6975
+9
1600
2450
3375
4380
5600
8100
+10
2000
3000
4075
5205
6600
9350
+11
2400
3555
4775
6030
7600
10600
+12
2925
4225
5600
6980
8850
11975
+13
3450
4900
6425
7930
10100
13350
+14
4100
5700
7375
9130
11600
14850
+15
4750
6500
8325
10330
13100
16350
Avarage Cost of Upgrading
The average cost of upgrading an item is calculated by multiplying the cost per attempt by the average number of attempts required to level it up by one. 
The following table contains the average cost of upgrading an item by level:
Upgrade level
★
★★
★★★
★★★★
★★★★★
★★★★★★
+1
100
150
225
330
500
750
+2
175
300
475
680
950
1475
+3
250
450
725
1030
1400
2200
+4
471
824
1265
1741
2265
3588
+5
786
1357
2036
2757
3500
5571
+6
1292
2125
3125
4092
5292
8125
+7
2000
3200
4650
5960
7800
11700
+8
3250
5063
7125
9200
11875
17438
+9
5333
8167
11250
14600
18667
27000
+10
8000
12000
16300
20820
26400
37400
+11
12000
17775
23875
30150
38000
53000
+12
19500
28167
37333
46533
59000
79833
+13
34500
49000
64250
79300
101000
133500
+14
51250
71250
92188
114125
145000
185625
+15
95000
130000
166500
206600
262000
327000
Total Cost
233906
329827
431321
537918
683648
894205
Rarity
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Rarity
Number of sub-stats
Colour
Common
0
Grey
Uncommon
1
Green
Rare
2
Blue
Epic
3
Violet
Legendary
4
Gold
If a rare Artifact is upgraded to +3 and +6, it will roll one of the existing additional stats. Upgrading it to +9 will upgrade it to the epic tier and add a new extra stat, boosting it to +12 will raise the Artifact to legendary tier and add a fourth extra stat. 
Note that the maximum upgrade level is +15. It will never add a substat upgrade, but it will give a big bonus to the main one.
Rank
The rank (the number of stars an item has) determines the level of its statistics. The higher the rank, the higher the main and auxiliary characteristics are, as well as the range of increase during pumping. Each Artifact is available in star ratings from 1 to 6.
The table below shows the main changes in characteristics from level to level. Note that LVL15's main stat will receive a big boost and will be increased by 20%. The statistics in the table are shown as follows: starting level/roll per level / maximum level
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Main stat
★
★★
★★★
★★★★
★★★★★
★★★★★★
HP (+)
60 / 72 / 1340
120 / 95 / 1820
170 / 119 / 2300
260 / 144 / 2840
450 / 167 / 3480
600 / 190 / 4080
HP (%)
1 / 1 / 21
2 / 1 / 25
4 / 1 / 30
6 / 2 / 40
8 / 2 / 50
11 / 3 / 62
ATK (+)
4 / 5 / 90
8 / 6 / 120
12 / 8 / 155
16 / 10 / 190
25 / 11 / 225
37 / 13 / 267
ATK (%)
1 / 1 / 21
2 / 1 / 25
4 / 1 / 30
6 / 2 / 40
8 / 2 / 50
11 / 3 / 62
DEF (+)
4 / 5 / 90
8 / 6 / 120
12 / 8 / 155
16 / 10 / 190
25 / 11 / 225
37 / 13 / 267
DEF (%)
1 / 1 / 21
2 / 1 / 25
4 / 1 / 30
6 / 2 / 40
8 / 2 / 50
11 / 3 / 62
SPD (+)
1 / 1 / 21
2 / 1 / 25
3 / 2 / 30
4 / 2 / 35
5 / 2 / 40
6 / 2 / 43
C.RATE (+)
1 / 1 / 21
2 / 1 / 25
4 / 1 / 30
6 / 2 / 40
8 / 2 / 50
11 / 3 / 62
C.DMG(+)
1 / 2 / 30
3 / 2 / 35
6 / 2 / 40
8 / 2 / 49
10 / 3 / 65
14 / 3 / 70
RESIST(%)
1 / 2 / 30
3 / 2 / 35
6 / 2 / 40
8 / 2 / 49
10 / 3 / 65
14 / 3 / 70
ACC(%)
1 / 2 / 30
3 / 2 / 35
6 / 2 / 40
8 / 2 / 49
10 / 3 / 65
14 / 3 / 70
Sub-stats
The below table illustrates what the roll range for each sub-stat is.
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Sub-stat
★
★★
★★★
★★★★
★★★★★
★★★★★★
HP (+)
23-100
51-175
77-275
98-375
150-500
225-625
HP (%)
1-2
1-4
2-4
4-6
4-7
5-8
ATK (+)
1-7
3-8
5-13
6-17
13-25
17-33
ATK (%)
1-2
1-4
2-4
4-6
4-7
5-8
DEF (+)
1-7
3-8
5-13
6-17
13-25
17-33
DEF (%)
1-2
1-4
2-4
4-6
4-7
5-8
SPD (+)
1-1
2-3
2-4
2-5
3-5
4-6
C.RATE (+)
1-2
2-3
2-4
3-5
4-6
5-7
C.DMG (+)
1-3
2-3
2-4
3-4
4-5
4-6
RESIST (%)
1-3
2-3
2-4
3-4
4-5
4-6
ACC (%)
1-3
2-3
2-4
3-4
4-5
4-6
Slots
There are 6 types of equipment - weapons, head, off-hand, gloves, armor, shoes. Each Artifact piece offers different primary and sub-stats. All this information is presented in the table below:
Type
Possible main-stat
Possible sub-stat
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Weapon
ATK (+)
HP (+) / HP (%)
ATK (%)
SPD (+)
C.RATE (%) / C.DMG (%)
RES (%) / ACC (%)
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Head
HP (+)
HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
SPD (+)
C.RATE (%) / C.DMG (%)
RES (%) / ACC (%)
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Off-hand
DEF (+)
HP (+) / HP (%)
DEF (%)
SPD (+)
C.RATE (%) / C.DMG (%)
RES (%) / ACC (%)
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Gloves
C.RATE (%) / C.DMG (%)
HP (+) / HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
HP (+) / HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
SPD (+)
C.RATE (%) / C.DMG (%)
RES (%) / ACC (%)
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Armor
HP (+) / HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
RES (%) / ACC (%)
HP (+) / HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
SPD (+)
C.RATE (%) / C.DMG (%)
RES (%) / ACC (%)
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Shoes
SPD (+)
HP (+) / HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
HP (+) / HP (%)
ATK (+) / ATK (%)
DEF (+) / DEF (%)
SPD (+)
C.RATE (%) / C.DMG (%)
RES (%) / ACC (%)
Obtaining
Artifacts can be obtained in two ways. One of them is collecting in campaign battles. Each common battle gives you a chance to get a specific item. While boss fights offer a chance to win a random item, there is a better chance of getting something more valuable. In addition, Artifacts can be found on the guild market and received as a daily reward.
Cost of removing items
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Grade
Cost
★
2500
★★
6500
★★★
13000
★★★★
25000
★★★★★
65000
★★★★★★
130000
Selling items
You can sell equipment that you do not need to earn Gold Coins. The value of the equipment depends on its rank and rarity:
Text
Common
Uncommon
Rare
Epic
Legendary
★
950
1075
1300
1800
2500
★★
1300
1500
1850
2350
3050
★★★
3000
3750
5350
7350
10000

Set Name	Set piece required	Set effect	Drop location	Description
Life	2	HP +15%	Greenhorn, Darkwoods	Provides a 15% HP increase based on a Hero base value for each set equipped (+45% HP with 3 sets).
Guardian	2	DEF +15%	Naporia, Witch's Rift	Provides a 15% DEF increase based on a Hero base value for each set equipped (+45% DEF with 3 sets).
Warrior	2	ATK +15%	Amber Sands, Ashen Grove	Provides a 15% ATK increase based on a Hero base value for each set equipped (+45% ATK with 3 sets).
Cursed	2	ACC +30%	Cardinal Oasis, Witch's Rift	Provides a 30% ACC increase for each set equipped (+90% ACC with 3 sets).
Protector	2	RES +30%	Lazurite Halls, Ashen Grove	Provides a 30% RES increase for each set equipped (+90% RES with 3 sets).
Hawkeye	2	C. RATE +15%	Fawnleaf Woods, Darkwoods	Provides a 15% CRIT RATE increase for each set equipped (+45% CRIT RATE with 3 sets).
Cover	2		Witch's Rift	Grants Immunity to the Hero for 3 turns on wave start. (9 turns with 3 sets)
Untouchable	2		Witch's Rift	Grants Immunity to the Hero for 3 turns on wave start. (9 turns with 3 sets)
Charge	2		Events	Grants 35 Mana at the start of the battle. (100 mana with 3 sets)
Zeal	2		Arena	Grants DMG increased by 2.5% for every living enemy.
Fury	2		Guild Wars	Grants: DMG increased by 15% if the Hero has less than 50% HP.
Caster	2	Mana Gain +1	Raid Bosses	Provides a 1 MANA GAIN increase for each set equipped (+3 MANA GAIN with 3 sets).
Crusher	4	C. DMG +40%	Sacred Grove, Witch's Rift	Provides a 40% CRIT DMG increase.
Swift	4	SPD +15%	Plateau of Rust, Ashen Grove	Provides a 12% SPD increase based on a Hero base value.
Berserker	4	ATK +45% HP -20%	Caldbeck Void, Darkwoods	Provides a 45% ATK increase and a 20% HP decrease based on a Hero base value.
Mystic	4	ACC +30% SPD +20	Malachite Pass, Witch's Rift	Provides a 30% ACC and a 15 SPD increase.
Brave	4	DEF +20% ATK +20%	Tenebris, Darkwoods	Provides a 20% ATK increase and a 20% DEF increase based on a Hero base value.
Giant	4	HP +20% C. DMG + 20%	Cursed Gate, Ashen Grove	Provides a 20% HP increase based on a Hero base value and 20% CRIT DMG increase.
Rotten	4		Arena	Grants 30% chance to inflict Heal Block for 3 turns whenever the Hero deals damage with their Special Ability. Can't be resisted.
Hope	4		Arena	Grants 25% chance to gain 50 Mana whenever the Hero uses their Special Ability.
Vampire	4		Witch's Rift	Recovers 35% of damage dealt as HP.
Bandit	4		Ashen Grove	Grants 100% chance to remove 2 positive effects from a single enemy when attacking with Gemstones.
Daze	4		Events	Grants 22% chance to inflict Stun for 2 turns whenever the Hero deals damage with their Special Ability.
Determination	4		Guild Wars	Grants 5% Mana for every 10% missing HP at the start of the turn.

Level	Success chance
1 > 3	100%
3 > 4	85%
4 > 5	70%
5 > 6	60%
6 > 7	50%
7 > 8	40%
8 > 9	30%
9 > 10	25%
10 > 11	20%
11 > 12	15%
12 > 13	10%
13 > 14	8%
14 > 15	5%

Upgrade level	★	★★	★★★	★★★★	★★★★★	★★★★★★
+1	100	150	225	330	500	750
+2	175	300	475	680	950	1475
+3	250	450	725	1030	1400	2200
+4	400	700	1075	1480	1925	3050
+5	550	950	1425	1930	2450	3900
+6	775	1275	1875	2455	3175	4875
+7	1000	1600	2325	2980	3900	5850
+8	1300	2025	2850	3680	4750	6975
+9	1600	2450	3375	4380	5600	8100
+10	2000	3000	4075	5205	6600	9350
+11	2400	3555	4775	6030	7600	10600
+12	2925	4225	5600	6980	8850	11975
+13	3450	4900	6425	7930	10100	13350
+14	4100	5700	7375	9130	11600	14850
+15	4750	6500	8325	10330	13100	16350

Main stat	★	★★	★★★	★★★★	★★★★★	★★★★★★
HP (+)	60 / 72 / 1340	120 / 95 / 1820	170 / 119 / 2300	260 / 144 / 2840	450 / 167 / 3480	600 / 190 / 4080
HP (%)	1 / 1 / 21	2 / 1 / 25	4 / 1 / 30	6 / 2 / 40	8 / 2 / 50	11 / 3 / 62
ATK (+)	4 / 5 / 90	8 / 6 / 120	12 / 8 / 155	16 / 10 / 190	25 / 11 / 225	37 / 13 / 267
ATK (%)	1 / 1 / 21	2 / 1 / 25	4 / 1 / 30	6 / 2 / 40	8 / 2 / 50	11 / 3 / 62
DEF (+)	4 / 5 / 90	8 / 6 / 120	12 / 8 / 155	16 / 10 / 190	25 / 11 / 225	37 / 13 / 267
DEF (%)	1 / 1 / 21	2 / 1 / 25	4 / 1 / 30	6 / 2 / 40	8 / 2 / 50	11 / 3 / 62
SPD (+)	1 / 1 / 21	2 / 1 / 25	3 / 2 / 30	4 / 2 / 35	5 / 2 / 40	6 / 2 / 43
C.RATE (+)	1 / 1 / 21	2 / 1 / 25	4 / 1 / 30	6 / 2 / 40	8 / 2 / 50	11 / 3 / 62
C.DMG(+)	1 / 2 / 30	3 / 2 / 35	6 / 2 / 40	8 / 2 / 49	10 / 3 / 65	14 / 3 / 70
RESIST(%)	1 / 2 / 30	3 / 2 / 35	6 / 2 / 40	8 / 2 / 49	10 / 3 / 65	14 / 3 / 70
ACC(%)	1 / 2 / 30	3 / 2 / 35	6 / 2 / 40	8 / 2 / 49	10 / 3 / 65	14 / 3 / 70

Sub-stat	★	★★	★★★	★★★★	★★★★★	★★★★★★
HP (+)	23-100	51-175	77-275	98-375	150-500	225-625
HP (%)	1-2	1-4	2-4	4-6	4-7	5-8
ATK (+)	1-7	3-8	5-13	6-17	13-25	17-33
ATK (%)	1-2	1-4	2-4	4-6	4-7	5-8
DEF (+)	1-7	3-8	5-13	6-17	13-25	17-33
DEF (%)	1-2	1-4	2-4	4-6	4-7	5-8
SPD (+)	1-1	2-3	2-4	2-5	3-5	4-6
C.RATE (+)	1-2	2-3	2-4	3-5	4-6	5-7
C.DMG (+)	1-3	2-3	2-4	3-4	4-5	4-6
RESIST (%)	1-3	2-3	2-4	3-4	4-5	4-6
ACC (%)	1-3	2-3	2-4	3-4	4-5	4-6

Type	Possible main-stat	Possible sub-stat
Weapon	ATK (+)	HP (+) / HP (%) ATK (%) SPD (+) C.RATE (%) / C.DMG (%) RES (%) / ACC (%)
Head	HP (+)	HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%) SPD (+) C.RATE (%) / C.DMG (%) RES (%) / ACC (%)
Off-hand	DEF (+)	HP (+) / HP (%) DEF (%) SPD (+) C.RATE (%) / C.DMG (%) RES (%) / ACC (%)
Gloves	C.RATE (%) / C.DMG (%) HP (+) / HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%)	HP (+) / HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%) SPD (+) C.RATE (%) / C.DMG (%) RES (%) / ACC (%)
Armor	HP (+) / HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%) RES (%) / ACC (%)	HP (+) / HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%) SPD (+) C.RATE (%) / C.DMG (%) RES (%) / ACC (%)
Shoes	SPD (+) HP (+) / HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%)	HP (+) / HP (%) ATK (+) / ATK (%) DEF (+) / DEF (%) SPD (+) C.RATE (%) / C.DMG (%) RES (%) / ACC (%)

Grade	Cost
★	2500
★★	6500
★★★	13000
★★★★	25000
★★★★★	65000
★★★★★★	130000

Text	Common	Uncommon	Rare	Epic	Legendary
★	950	1075	1300	1800	2500
★★	1300	1500	1850	2350	3050
★★★	3000	3750	5350	7350	10000