Tribute to the World Tree, Lesser Masticore, and Altar of Dementia

Prerequisites

• Tribute to the World Tree on the battlefield
• Lesser Masticore on the battlefield
• Altar of Dementia on the battlefield
• Lesser Masticore does not have a -1/-1 counter on it

Steps

1. Activate Altar of Dementia by sacrificing Lesser Masticore
2. When Lesser Masticore dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it
3. When Lesser Masticore enters the battlefield, Tribute to the World Tree triggers, putting two +1/+1 counters on Lesser Masticore
4. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to Lesser Masticore's power
5. Repeat

Results

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