Color Identity: B

Initial Card State
- All permanents on the battlefield.
Notable Prerequisites
- You control a white nontoken Vampire with toughness two or greater that does not have a -1/-1 counter on it.
Mana Needed
- ({2} magic symbol)
available.
Steps
- Activate Antler Skulkin by paying ({2} magic symbol)
, giving the nontoken white Vampire persist until end of turn. - Activate Ashnod's Altar by sacrificing the Vampire, adding ({C} magic symbol)
({C} magic symbol)
. - The Vampire dies, triggering its persist ability and Cordial Vampire.
- Resolve the Vampire's persist trigger, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- Resolve the Cordial Vampire trigger, putting a +1/+1 counter on each Vampire you control.
- Repeat.
Results
- Infinite +1/+1 counters on certain creatures.
- Infinite death triggers.
- Infinite ETB.
- Infinite LTB.
- Infinite sacrifice triggers.
Bracket Tag
This combo has been estimated to be Exhibition (Bracket 1+).