Blightbeetle + Ashnod's Altar + Donate

Blightbeetle

Ashnod's Altar

Donate

How it works

1. Donate Blightbeetle to an opponent
2. Activate Ashnod's Altar by sacrificing the undying creature.
3. When the undying creature dies, its undying ability triggers, returning itself from your graveyard to the battlefield without a +1/+1 counter on it due to Blightbeetle.
4. Repeat from step 2.

This clever loop relies on *Blightbeetle*’s static ability to shut down a fundamental safety valve of the game—by ensuring your opponents' creatures can't have +1/+1 counters put on them, it completely bypasses the restriction that normally limits undying creatures to returning just once. Once you *Donate* that *Blightbeetle* to your opponent, your own undying creature becomes a permanent engine when fed into *Ashnod's Altar*, since every time it dies, its trigger brings it right back clean and ready to sacrifice again for infinite colorless mana and death triggers.