Cost of Ambition
野心の代償 [yashin no daishou] or 'compensation for ambition' in Japanese.
Record Keeper

Type: Command, Rarity: -
Target: single, Element: Dark
Learn: Dark Knight Raid Burst Mode
Effect: Deals a twofold Dark-element physical attack on an enemy, decreases the user's RES for a set period of time and raises their ATK (effect: moderate)
Category: Ability