Boonweaver Giant, Ashnod's Altar, and Shade's Form

Prerequisites

• Boonweaver Giant on the battlefield
• Ashnod's Altar on the battlefield
• Shade's Form on the battlefield

Steps

1. Activate Ashnod's Altar by sacrificing Boonweaver Giant When Boonweaver Giant dies, Shade's Form triggers, returning Boonweaver Giant from your graveyard to the battlefield tapped
2. When Boonweaver Giant enters, it triggers, returning Shade's Form from your graveyard to the battlefield attached to Boonweaver Giant
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite colorless mana
• Infinite death triggers
• Infinite sacrifice triggers