Karn, Silver Golem [Arena League 1999] Faerie Wizard using their libraries as their

using their libraries as their decks

Whenever an opponent casts a creature or planeswalker spell with the same name as a card in their graveyard

At the beginning of your end step

Choose an instant or sorcery card exiled this way and copy it three times

It can't be regenerated

Karn, Silver Golem [Arena League 1999] Faerie Wizard using their libraries as theirSet: Arena League 1999 Type: Legendary Artifact Creature Golem Rarity: Rare Cost: {5} Whenever Karn, Silver Golem blocks or becomes blocked, it gets 4 +4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.