How it works
Prerequisites
- An opponent controls a creature
- Undying Creature
Steps
- 1Donate Blightbeetle to an opponent
- 2Activate Ashnod's Altar by sacrificing the undying creature.
- 3When 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.
- 4Repeat from step 2.
Commander brackets
In which brackets is this combo allowed, per Spellbook's Exhibition tier?