Gravekeeper's Watcher [LCYW-EN186] Common

Set: Legendary Collection 3: Yugi's World Card type: Effect Monster Rarity: Common Attack: 1000 Defense: 1000 During either player's turn, when your opponent activates a Spell/Trap Card or monster effect that could make them discard when it resolves: You can send this card from your hand to the Graveyard; negate the activation, and if you do, destroy it.