Sentinel of Lost Lore (Wilds of Eldraine)

Creature Ñ Elf Knight - When this creature enters, choose one or more Ñ
¥ Return target card you own in exile that has an Adventure to your hand.
¥ Put target card you don't own in exile that has an Adventure on the bottom of its owner's library.
¥ Exile target player's graveyard.