Crit Damage Increase is a buff that increases Crit Damage rate, making your attacks more powerful.
While in the battle, you can tap and hold the Buff icon and read what it does.
Here is a list of heroes who can apply this buff:
  • Robin Bad (Ability 3)
  • Niya (Ability 3)
  • Snorri (Ability 1)
  • Garrett (Ability 3)
  • Solius (Leadership Ability)
  • Rantha (Leadership Ability)

  • Maar ( Ability 3)
  • Sharp (Ability 1)

  • Kiana (Ability 1)
  • Count Delman (Ability 3)
  • Telias (Passive Ability)
  • Instructor Gorram (Passive and Leadership Ability)
  • Arno (Ability 1)
  • Kin Li ( Ability 3)
  • Master Duo (Ability 3)
  • Uncle Ho (Ability 2)
  • Lei Zi (Ability 3)
  • Tomby (Ability 3)
  • Roxy ( Passive Ability)
  • Boreas (Ability 3)
  • Sindri (Ability 3)
  • Zappy (Passive Ability and Ability 1, 3)
  • Tobald (Ability 3)
  • Archi & Ro (Ability 3)
  • Bar & Rel (Ability 3)
  • Venomate (Ability 3)
  • Shadar (Leadership Ability)
  • Slinger (Passive Ability)
  • Buff (Ability 2 - one of the possible buffs)