Vesperlark + Body Double + Bloodflow Connoisseur

Vesperlark

Body Double

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Body Double.
2. When Body Double leaves the battlefield, its Vesperlark ability triggers, returning itself from your graveyard to the battlefield as a copy of Vesperlark.
3. Resolve the Bloodflow Connoisseur ability.
4. Repeat.

This elegant loop relies on Body Double entering the graveyard as a copy of Vesperlark, setting up a self-sustaining cycle where every sacrifice feeds the engine. By sacrificing Body Double to Bloodflow Connoisseur, you trigger Vesperlark's leaves-the-battlefield ability, which pulls Body Double right back out of the graveyard to restart the loop. As Body Double returns, it can re-enter as a copy of Vesperlark all over again, fueling Bloodflow Connoisseur with an endless stream of +1/+1 counters.