Theros Beyond Death

Calix, Destiny's Hand | Legendary Planeswalker | Calix | +1: Look at the top four cards of your library. You may reveal an enchantment card from among them and put that card into your hand. Put the rest on the bottom of your library in a random order. −3: Exile target creature or enchantment you don't control until target enchantment you control leaves the battlefield. −7: Return all enchantment cards from your graveyard to the battlefield. | Magali Villeneuve

Enigmatic Incarnation | Enchantment | | At the beginning of your end step, you may sacrifice another enchantment. If you do, search your library for a creature card with mana value equal to 1 plus the sacrificed enchantment's mana value, put that card onto the battlefield, then shuffle. | PINDURSKI

Acolyte of Affliction | Creature | Human Cleric | When Acolyte of Affliction enters the battlefield, mill two cards, then you may return a permanent card from your graveyard to your hand. | Chase Stone

Polukranos, Unchained | Legendary Creature | Zombie Hydra | Polukranos enters the battlefield with six +1/+1 counters on it. It escapes with twelve +1/+1 counters on it instead. If damage would be dealt to Polukranos while it has a +1/+1 counter on it, prevent that damage and remove that many +1/+1 counters from it. {1}{B}{G}: Polukranos fights another target creature. Escape—{4}{B}{G}, Exile six other cards from your graveyard. | Chris Rahn