Boonweaver Giant, Yahenni, Undying Partisan, and False Demise

Prerequisites

• Boonweaver Giant on the battlefield
• Yahenni, Undying Partisan on the battlefield
• False Demise on the battlefield

Steps

1. Activate Yahenni by sacrificing Boonweaver Giant When Boonweaver Giant dies, False Demise triggers, returning Boonweaver Giant from your graveyard to the battlefield When Boonweaver Giant enters, it triggers, returning False Demise from your graveyard to the battlefield attached to Boonweaver Giant
2. Resolve the Yahenni ability from step 1
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite sacrifice triggers