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Search its controllers graveyard, hand, and library for all cards with the same name as that artifact and exile them

This is a great Instant to cast to simultaneously remove a possible threat and trigger Yshtolas effect

Negate the activation, and if you do, shuffle that monster into the Deck, also your opponent cannot Summon or activate the effects of monsters with the same name as that monster for the rest of this turn

NONE GRADED HIGHER

The latter ensures you dont accidentally play a card that has already been played, but its also a huge factor in how you earn points in the game since you need to think about setting up a big line of tokens in addition to winning tricks