Reroll decision checklist

  1. Confirm the unit is S++ or S+ in the imported tier context, or has a clear support role.
  2. Check the recommended trait and role before rolling.
  3. Keep a strong role-fit trait instead of chasing perfect odds blindly.
  4. Recheck after Update 3.0 before spending heavily on borderline units.

High-value traits to know

  • Astral · 0.45% · +20% Affliction Duration, -20% Cooldowns, +15% Range, stacking DoT, 1 unit limit
  • Sacred · 0.3% · +25% Damage, -10% Cooldowns, +25% Range, -15% Cost
  • Eternal · 0.2% · -20% Cooldown, +2% Damage per wave (50% cap), +1% Range per wave
  • Fission · 0.15% · +15% Damage, -15% Cooldown, +25% Range, inflicts Radiation DoT
  • Ruler · 0.1% · +200% Damage, -20% Cooldown, +30% Range, 1 unit limit

Universal Tower Defense X Trait Reroll FAQ

Rerolling is a cost decision, not just a tier-list decision.

When should I use Trait Reroll Stones?

Use Trait Reroll Stones after the unit is already a long-term carry, support, or utility pick. Do not spend heavily on temporary early-game units.

When should I stop rerolling?

Stop when the trait fits the unit role and the next upgrade would require chasing very low listed odds without a clear long-term payoff.

Which units deserve rerolls first?

Start with source-backed S++ or S+ rows that already have a recommended trait listed, then check whether the unit still fits your current team.