Geralf, the Fleshwright + Pitiless Plunderer + Ebondeath, Dracolich + Umbral Collar Zealot + Heartless Summoning

Geralf, the Fleshwright

Pitiless Plunderer

Ebondeath, Dracolich

Umbral Collar Zealot

Heartless Summoning

How it works

1. Cast Ebondeath from your graveyard by paying .
2. Geralf's first ability triggers, creating a 2/2 Zombie Rogue creature token.
3. When the Zombie Rogue enters the battlefield, Geralf's second ability triggers, putting a number of +1/+1 counters on the Zombie Rogue equal to the number of other Zombies that entered the battlefield under your control.
4. When Ebondeath enters the battlefield, Geralf's second ability triggers, putting a number of +1/+1 counters on Ebondeath equal to the number of other Zombies that entered the battlefield under your control.
5. Activate Umbral Collar Zealot twice by sacrificing the Zombie Rogue and Ebondeath.
6. When the Zombie Rogue and Ebondeath die, Pitiless Plunderer triggers twice, creating two Treasure tokens.
7. Resolve both Umbral Collar Zealot abilities.
8. Activate the Treasures by tapping and sacrificing them, adding .
9. Repeat.

This clever loop relies on Heartless Summoning to slash creature costs, allowing you to replay Ebondeath, Dracolich straight from the graveyard for just two black mana once a creature has died. As Ebondeath and the token generated by Geralf, the Fleshwright enter and subsequently get sacrificed to Umbral Collar Zealot, Pitiless Plunderer steps in to turn those deaths into the exact mana needed to keep the cycle going. Meanwhile, Geralf's stacking static trigger rewards your endless parade of entering and dying undead with towering piles of +1/+1 counters and infinite filtering via surveil.