Boonweaver Giant + Viscera Seer + Unholy Indenture

Boonweaver Giant

Viscera Seer

Unholy Indenture

How it works

1. Activate Viscera Seer by sacrificing Boonweaver Giant
2. When Boonweaver Giant dies, Unholy Indenture triggers, returning Boonweaver Giant from your graveyard to the battlefield
3. When Boonweaver Giant enters, it triggers, returning Unholy Indenture from your graveyard to the battlefield attached to Boonweaver Giant.
4. Resolve the Viscera Seer ability from step 1.
5. Repeat.