Substats
Every substat's best roll, how much you can stack, and how many substats gear and pets get.
2
substats per gear piece from Quantum on
1 from Modern; none before Modern
+80%
Critical Damage: the biggest roll
max per piece; range +1% to +80%
12
pieces can stack the same stat
8 gear + 3 pets + 1 mount = 24 substat lines
#Best rolls
Best roll per piece
adds with other bonusescompounds (multiplies)
Note Every roll starts at +1%. Same on every age and rarity.Note Melee Damage needs a melee weapon, Ranged Damage a ranged one. Roll the one that matches.Interpretation Compounding stats sit in their own layer, so they appear to multiply with plain Damage %.
#Calculator
How much can I stack?
Pick a substat, how many pieces carry it and how good the rolls are.
Max-roll pieces to reach 100%
Substats only. Grey = more than your 12 pieces.
Note Research and other bonuses lower these counts.
#How it works
- Forge an itemIts age sets how many substats it gets (0 to 2). Pets and mounts go by rarity.
- Each line is a different statPicked from 13 stats. No repeats on one piece.
- The value rolls in a fixed rangeSame min and max at every age and rarity.
- Same stat on many pieces adds upCompounding ones multiply with your other Damage %.
Assumes Chances assume every stat is equally likely.Interpretation Skill Cooldown rolls appear to add, then apply as × (1 − total). If they compounded, 12 max rolls = −58.1%, not −84%.Assumes "All 12 pieces" ignores tech tree and skins. A chance over 100% presumably adds nothing.Assumes Midpoint is the average roll only if rolls are uniform, which is not confirmed.
#How many substats?
Substats per gear piece, by age
Same for all 8 slots and every rarity.
Primitive
Medieval
Early-Modern
Modern
Space
Interstellar
Multiverse
Quantum
Underworld
DivineAll 8 slots: 
Substats per pet or mount, by rarity
Legendary is the first rarity with 2.
Assumes Mounts appear to get the same substat counts as pets.Interpretation Ascended pets and mounts appear to use the top rarity (Mythic, 2).
#Never rolls
Move Speed Attack Range Reflect Chance
Range 0% to 0%: these never appear as substats.
Note Move Speed: from tech node 
Movement SpeedNote Attack Range: from tech node 
Attack RangeNote Reflect Chance: no known source (maybe events).
Movement SpeedNote Attack Range: from tech node Attack RangeNote Reflect Chance: no known source (maybe events).Show all data every substat: min, max, midpoint, stacked max, what it affects 13 rows
| Substat | Min | Max | Midpoint | Max on all 12 pieces | Affects |
|---|---|---|---|---|---|
| Attack Speed | +1% | +40% | +20.5% | +480% | Attack Speed of your hero |
| Block Chance | +1% | +5% | +3% | +60% | Block Chance of your hero |
| Critical Chance | +1% | +12% | +6.5% | +144% | Critical Chance of your hero |
| Critical Damage | +1% | +80% | +40.5% | +960% | Critical Damage of your hero |
| Damage | +1% | +15% | +8% | +180% | Damage of your hero; Damage of active skills |
| Double Chance | +1% | +20% | +10.5% | +240% | Double Chance of your hero |
| Health | +1% | +15% | +8% | +180% | Health of your hero; Health of active skills |
| Health Regen | +1% | +4% | +2.5% | +48% | Health Regen of your hero |
| Lifesteal | +1% | +20% | +10.5% | +240% | Lifesteal of your hero |
| Melee Damage | +1% | +50% | +25.5% | +600% | Damage of your hero (with a Melee weapon) compounds |
| Ranged Damage | +1% | +15% | +8% | +180% | Damage of your hero (with a Ranged weapon) compounds |
| Skill Cooldown | −1% | −7% | −4% | −84% | cooldown (reduced) of active skills |
| Skill Damage | +1% | +30% | +15.5% | +360% | Damage of active skills; Health of active skills compounds |
Show all data substats on gear by age 10 rows
| Item age | Substats per item | Full gear set (8 pieces) |
|---|---|---|
| Primitive – Early-Modern | 0 | 0 |
| Modern – Multiverse | 1 | 8 |
| Quantum – Divine | 2 | 16 |
| Age | Substats |
|---|---|
| Primitive | 0 |
| Medieval | 0 |
| Early-Modern | 0 |
| Modern | 1 |
| Space | 1 |
| Interstellar | 1 |
| Multiverse | 1 |
| Quantum | 2 |
| Underworld | 2 |
| Divine | 2 |
Show all data substats on pets and mounts by rarity 6 rows
| Rarity | Substats | Full pet team (3 pets) |
|---|---|---|
| Common | 1 | 3 |
| Rare | 1 | 3 |
| Epic | 1 | 3 |
| Legendary | 2 | 6 |
| Ultimate | 2 | 6 |
| Mythic | 2 | 6 |