At the beginning of your end step, you may exile target creature you control, then return that card to the battlefield under your control.

Whenever a nontoken creature you control enters, flip a coin until you lose a flip. For each flip you won, create a token that's a copy of that creature. Those tokens gain haste. Exile them at the beginning of the next end step.

Delirium — When this creature enters, choose one. If there are four or more card types among cards in your graveyard, choose both instead. • This creature deals 4 damage to any target. • Look at the top four cards of your library. Put one of them into your hand and the rest on the bottom of your library in a random order.