Boonweaver Giant + Shilgengar, Sire of Famine + Unholy Indenture

Boonweaver Giant

Shilgengar, Sire of Famine

Unholy Indenture

How it works

1. Activate Shilgengar 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 Shilgengar ability from step 1.
5. Repeat.