Danitha, Benalia's Hope + Shade's Form + Bloodflow Connoisseur

Danitha, Benalia's Hope

Shade's Form

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Danitha.
2. When Danitha dies, Shade's Form triggers, returning Danitha from your graveyard to the battlefield tapped.
3. When Danitha enters the battlefield, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Danitha.
4. Resolve the Bloodflow Connoisseur ability, putting a +1/+1 counter on it.
5. Repeat.