Flying Archfiend of the Dross enters with four oil counters on it. At the beginning of your upkeep, remove an oil counter from Archfiend of the Dross. Then if it has no oil counters on it, you lose the game. Whenever a creature an opponent controls dies, its controller loses 2 life.
Mutate {5}{U} Whenever this creature mutates, tap up to X target creatures, where X is the number of times this creature has mutated. Those creatures don't untap during their controller's next untap step.
Whenever Archmage's Newt deals combat damage to a player, target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. That card gains flashback {0} until end of turn instead if Archmage's Newt is saddled. Saddle 3
Flying Whenever Archon of Cruelty enters or attacks, target opponent sacrifices a creature or planeswalker of their choice, discards a card, and loses 3 life. You draw a card and gain 3 life.
Flying Lifelink Pegasus creatures you control have lifelink. Constellation — Whenever an enchantment you control enters, create a 2/2 white Pegasus creature token with flying.
Archpriest of Iona's power is equal to the number of creatures in your party. At the beginning of combat on your turn, if you have a full party, target creature gets +1/+1 and gains flying until end of turn.
Backup 1 Deathtouch Whenever this creature deals combat damage to a player or battle, return target creature card from your graveyard to the battlefield.