Nim Deathmantle + Ashnod's Altar

手順

1. Activate Ashnod's Altar by sacrificing the persist or undying creature, adding {C}{C}.
2. When the persist or undying creature dies, its persist or undying ability and Nim Deathmantle trigger.
3. Resolve the Nim Deathmantle trigger, choosing not to pay.
4. Resolve the creature's trigger, returning it from your graveyard to the battlefield with a +1/+1 or -1/-1 counter on it.
5. Activate Ashnod's Altar by sacrificing the persist or undying creature, adding {C}{C}.
6. When the persist or undying creature dies, Nim Deathmantle triggers, causing you to pay {4} to return the persist or undying creature from your graveyard to the battlefield.
7. Repeat.