Infinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite death triggersInfinitely large creature until end of turn
How it works
Activate Bloodthrone Vampire by sacrificing Moritte of the Frost.
When Moritte of the Frost dies, it triggers its persist ability, returning itself to the battlefield as a copy of the creature with persist with two +1/+1 counters and one -1/-1 counter on it.
Remove one +1/+1 counter and one -1/-1 counter from Moritte of the Frost as a state-based action.