Sun Titan, Gift of Immortality, and Altar of Dementia

Prerequisites

• Sun Titan on the battlefield
• Gift of Immortality on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing Sun Titan
2. When Sun Titan dies, Gift of Immortality triggers, returning Sun Titan from your graveyard to the battlefield
3. When Sun Titan enters the battlefield, it triggers, returning Gift of Immortality from your graveyard to the battlefield attached to Sun Titan
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Sun Titan's power
5. Repeat

Results

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