Brain Control [YSD-EN031] Common Noble Knights of the Round Table Box Set when a Spell/Trap Card is

when a Spell/Trap Card is activated: You can send 1 "Crystal Beast" monster you control to the Graveyard

Set: X Record Pre-Release Promos Card type: Option Rarity: Rare Play Cost: 6 [Main] Trash up to 3 cards in your hand

but how about three decades of Magic cards

inflict damage to your opponent equal to half the current ATK of that monster your opponent controls

Brain Control [YSD-EN031] Common Noble Knights of the Round Table Box Set when a Spell/Trap Card isSet: Starter Deck 2006 Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 Pay 800 Life Points. Select 1 face up monster on your opponent's side of the field. Take control of the selected card until the End Phase of the turn this card is activated.