Phyrexian Altar + Reluctant Role Model

Phyrexian Altar

Reluctant Role Model

How it works

1. Activate Phyrexian Altar by sacrificing the persist creature that has a +1/+1 counter on it, adding one mana of any color.
2. When that creature dies, its persist ability and Reluctant Role Model trigger.
3. Resolve Reluctant Role Model's ability, putting at least two +1/+1 counters onto the surviving persist creature due to the counter-increasing effect.
4. If that creature had a -1/-1 counter on it, remove that and one of the +1/+1 counters from it as a state-based action.
5. Resolve the persist ability from step 2, returning the persist creature from your graveyard to the battlefield with a -1/-1 counter.
6. Repeat.