Amalgam Alpha

Mind Collapse — When Amalgam Alpha enters the battlefield, each opponent sacrifices half their creatures, rounded up, and discards two cards.

Reality Fracture — Whenever Amalgam Alpha deals combat damage to a player, you may exile target nonland permanent that player controls.

Unstable Flesh — At the beginning of your upkeep, if Amalgam Alpha is in your graveyard,
you may pay {6}. If you do, return it to the battlefield with a -1/-1 counter.