
Grades and Traits
Grades
- DD grade1 in 2 per roll, 100% for this or better50%: 2 gems, 90%: 4x1.1income
- CC grade1 in 4 per roll, 54.9% for this or better50%: 3 gems, 90%: 7x1.2income
- BB grade1 in 7 per roll, 26.9% for this or better50%: 5 gems, 90%: 15x1.7income
- AA grade1 in 13 per roll, 11.9% for this or better50%: 9 gems, 90%: 28x3income
- A+A+ grade1 in 34 per roll, 3.95% for this or better50%: 24 gems, 90%: 78x4.5income
- SS grade1 in 112 per roll, 1.03% for this or better50%: 78 gems, 90%: 257x7income
- S+S+ grade1 in 995 per roll, 0.14% for this or better50%: 690 gems, 90%: 2.29kx10income
- ZZ grade1 in 3,432 per roll, 0.04% for this or better50%: 2.38k gems, 90%: 7.9kx15income
- Z+Z+ grade1 in 12,599 per roll, 0.01% for this or better50%: 8.73k gems, 90%: 29.01kx25income
- 神God grade (神)1 in 52,384 per roll, 0.0025% for this or better50%: 36.31k gems, 90%: 120.6kx50income
- ∞Infinity grade (∞)1 in 203,121 per roll, 0.00059% for this or better50%: 140.8k gems, 90%: 467.7kx100income
- ΩOmega grade (Ω)1 in 1.01M per roll, 0.000099% for this or better50%: 696.9k gems, 90%: 2.31Mx250income
Traits
Naturex1.2 income, x1.25 healthCommon, about 4 rerolls for a 50% shot20%1 in 5
Brawlerx1.75 damageCommon, about 4 rerolls for a 50% shot18%1 in 6
Incomex2 incomeUncommon, about 5 rerolls for a 50% shot14%1 in 7
Toughx1.25 income, x1.5 damage, x2 healthUncommon, about 6 rerolls for a 50% shot12%1 in 8
Vitalx3 healthRare, about 10 rerolls for a 50% shot7%1 in 14
BlazingBurns for 25% of each hitRare, about 12 rerolls for a 50% shot6%1 in 17
FrozenEnemies hit 25% slowerRare, about 14 rerolls for a 50% shot5%1 in 20
SwiftHits 25% fasterRare, about 14 rerolls for a 50% shot5%1 in 20
Lucky2x Tower reward chancesEpic, about 23 rerolls for a 50% shot3%1 in 33
Magnet2x Tower rewardsEpic, about 23 rerolls for a 50% shot3%1 in 33
VenomPoison stacks with every hitEpic, about 28 rerolls for a 50% shot2.5%1 in 40
Demon20% chance of a 3x hitLegendary, about 46 rerolls for a 50% shot1.5%1 in 67
Cursedx5 damage, x0.5 healthLegendary, about 46 rerolls for a 50% shot1.5%1 in 67
Evolvedx2 income, x2 damage, x2 healthMythical, about 87 rerolls for a 50% shot0.8%1 in 125
Void10% chance to wipe an enemyCosmic, about 139 rerolls for a 50% shot0.5%1 in 200
Blessedx3 income, x3 damage, x3 healthDivine, about 347 rerolls for a 50% shot0.2%1 in 500
About grades and traits
Grades and traits both multiply income, on top of size and mutation, so a high grade on a heavy mutated unit is where a plot's biggest numbers come from. Put them together on any unit in the income calculator.
Questions
What do grades do?
A grade multiplies a unit's income, from x1.1 for D to x250 for Omega. Each roll costs 1 gem and replaces the old grade.
How many gems for an S grade or better?
One roll gives S or better 1.03% of the time, so about 67 gems for a 50% shot and 222 for 90%. Omega is 1 in 1.01M: 696.9k gems for a 50% shot.
What do traits do?
Traits change income, tower damage and health, and some add a tower effect. Blessed is the best for income at x3 (1 in 500). Each reroll uses 1 trait reroll and picks a new trait at random.
Is a random roll worth it on average?
A random grade averages x1.54 income and a random trait x1.22, against x1 with neither. Most rolls are low; the averages are pulled up by the rare top results.
Where do gems come from?
The towers, one per domain from Easy to Impossible: floors can drop gems along with potions, and a team with the Lucky or Magnet trait gets more of them.

