Ebondeath, Dracolich + Dracogenesis + Evereth, Viceroy of Plunder

Ebondeath, Dracolich

Dracogenesis

Evereth, Viceroy of Plunder

How it works

1. Cast Ebondeath from your graveyard by paying 0.
2. Activate Evereth by sacrificing Ebondeath.
3. Repeat.

This engine gets its explosive power from Dracogenesis, whose continuous effect allows you to cast your Dragon spells entirely free of mana costs. Because Ebondeath, Dracolich can be cast directly from your graveyard the turn any other creature dies, you can repeatedly deploy the Dracolich for zero mana thanks to that discount. Once it enters, you feed it to Evereth, Viceroy of Plunder's activated ability as a sacrifice outlet, which stacks an endless stream of +1/+1 counters onto Evereth while automatically sending Ebondeath right back to the graveyard to fuel the next iteration.