Woodfall Primus + Ashnod's Altar + Hardened Academic

Woodfall Primus

Ashnod's Altar

Hardened Academic

How it works

1. Activate Ashnod's Altar by sacrificing Woodfall Primus.
2. When Woodfall Primus dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
3. Hardened Academic and Woodfall Primus trigger.
4. Resolve the Hardened Academic trigger, putting a +1/+1 counter on Woodfall Primus.
5. Resolve the Woodfall Primus trigger, destroying target noncreature permanent.
6. Repeat.

This loop operates as an engine of relentless destruction by weaponizing Woodfall Primus and Ashnod's Altar in a self-sustaining cycle of sacrifice and rebirth. Each time you feed the Primus to the Altar for colorless mana, its persist ability brings it back with a -1/-1 counter, but Hardened Academic turns any card leaving your graveyard into a +1/+1 counter that immediately cancels out the -1/-1 counter. This elegant neutralization of persist allows you to repeat the process indefinitely, wiping out every noncreature permanent your opponents control while generating boundless mana and triggers.