Melira, Sylvok Outcast + Woodfall Primus + Yahenni, Undying Partisan

Melira, Sylvok Outcast

Woodfall Primus

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Woodfall Primus.
2. When Woodfall Primus dies, its persist ability triggers, returning it from your graveyard to the battlefield without a -1/-1 counter on it due to Melira.
3. When Woodfall Primus enters, it triggers, destroying a noncreature permanent.
4. Resolve the Yahenni ability.
5. Repeat.

This loop harnesses the continuous sacrifice outlet of Yahenni, Undying Partisan to feed on Woodfall Primus over and over again, locking down the board by systematically destroying any number of noncreature permanents. The true linchpin here is Melira, Sylvok Outcast, whose passive ability prevents -1/-1 counters from being placed on your creatures entirely. Because Melira negates the drawback of Woodfall Primus's persist ability, the giant tree repeatedly enters the battlefield fresh, triggering its destruction effect infinitely without ever staying down.