Pitiless Plunderer + Reassembling Skeleton + Umbral Collar Zealot + Drivnod, Carnage Dominus

Pitiless Plunderer

Reassembling Skeleton

Umbral Collar Zealot

Drivnod, Carnage Dominus

How it works

1. Activate Umbral Collar Zealot by sacrificing Reassembling Skeleton.
2. When Reassembling Skeleton dies, Pitiless Plunderer triggers twice, creating two Treasure tokens.
3. Resolve the Umbral Collar Zealot ability.
4. Activate the Treasure tokens by tapping and sacrificing them, adding 1.
5. Activate Reassembling Skeleton by paying 1, returning it from your graveyard to the battlefield tapped.
6. Repeat.

This loop turns a modest skeleton into an engine for infinite deaths and graveyard setup. When Umbral Collar Zealot sacrifices Reassembling Skeleton, Drivnod, Carnage Dominus steps in to double the death triggers, causing Pitiless Plunderer to spin off two Treasure tokens instead of one. Sacrificing those Treasures refunds the exact mana needed to bring Reassembling Skeleton back from the graveyard, leaving you with a permanent surplus of death triggers, enters-the-battlefield triggers, and surveil from Umbral Collar Zealot's ability.