Boonweaver Giant, Altar of Dementia, and Gift of Immortality

Prerequisites

• Boonweaver Giant on the battlefield
• Altar of Dementia on the battlefield
• Gift of Immortality on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Boonweaver Giant When Boonweaver Giant dies, Gift of Immortality triggers, returning Boonweaver Giant from your graveyard to the battlefield When Boonweaver Giant enters, it triggers, returning Gift of Immortality from your graveyard to the battlefield attached to Boonweaver Giant
2. Resolve the Altar of Dementia ability from step 1
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill