Dargo, the Shipwrecker + Earthcraft + Umbral Collar Zealot

Dargo, the Shipwrecker

Earthcraft

Umbral Collar Zealot

How it works

1. Activate a basic Mountain, adding .
2. Cast Dargo from the command zone by paying .
3. Activate Earthcraft by tapping Dargo, untapping a basic Mountain.
4. Activate Umbral Collar Zealot by sacrificing Dargo.
5. Choose to return Dargo from your graveyard to the command zone.
6. Resolve the Umbral Collar Zealot ability
7. Repeat.

This clever loop turns Dargo, the Shipwrecker into a perpetual sacrifice engine by constantly sending him back to the command zone. Earthcraft provides the vital mana engine by letting Dargo tap itself to untap a basic land before he hits the graveyard, while Umbral Collar Zealot acts as the outlet to sacrifice him for the required cost. Because Dargo can be repeatedly recast for a minimal investment and sacrificed to trigger his own return, you generate an endless storm of creature deaths, enters-the-battlefield triggers, and commander casts.