Skill Successor (SDLI-EN034) [Structure Deck: Realm of Light]

Target 1 face-up monster you control; it gains 400 ATK until the end of this turn. During your turn, except the turn this card was sent to the GY: You can banish this card from your GY, then target 1 face-up monster you control; that target gains 800 ATK until the end of this turn.