When Deputy of Detention enters, exile target nonland permanent an opponent controls and all other nonland permanents that player controls with the same name as that permanent until Deputy of Detention leaves the battlefield.
When Detention Sphere enters, you may exile target nonland permanent not named Detention Sphere and all other permanents with the same name as that permanent. When Detention Sphere leaves the battlefield, return the exiled cards to the battlefield under their owner's control.
When Devoted Grafkeeper enters, mill two cards. Whenever you cast a spell from your graveyard, tap target creature you don't control. Disturb {1}{W}{U}
When Devoted Grafkeeper enters, mill four cards. Whenever you cast a spell from your graveyard, tap target creature you don't control. Disturb {1}{W}{U}
Whenever one or more cards are put into your graveyard from your library, Devourer of Memory gets +1/+1 until end of turn and can't be blocked this turn. {1}{U}{B}: Mill a card.
It slips silently through the still waters of the Labyrinth of Memories to feed.
Choose one — • Counter target sorcery spell. • Destroy target creature with power 2 or less. • Look at the top three cards of target player's library. Put one back and the rest into that player's graveyard.
Flying Whenever you attack, surveil X, where X is the number of opponents being attacked. At the beginning of each end step, if three or more cards were put into your graveyard from anywhere other than the battlefield this turn, draw a card.
Create a 5/5 black and red Elemental creature token. Target opponent sacrifices a creature of their choice for each black creature you control, then sacrifices a land of their choice for each red creature you control.