Boonweaver Giant + Shade's Form + Bloodflow Connoisseur

Boonweaver Giant

Shade's Form

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Boonweaver Giant
2. When Boonweaver Giant dies, Shade's Form triggers, returning Boonweaver Giant from your graveyard to the battlefield
3. When Boonweaver Giant enters, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Boonweaver Giant.
4. Resolve the Bloodflow Connoisseur ability from step 1.
5. Repeat.