Zask, Skittering Swarmlord, Verdant Succession, and Altar of Dementia

Prerequisites

• Zask, Skittering Swarmlord on the battlefield
• Verdant Succession on the battlefield
• Altar of Dementia on the battlefield
• You control another nontoken green Insect

Steps

1. Activate Altar of Dementia by sacrificing another nontoken green Insect
2. The Insect dies, triggering Zask and Verdant Succession
3. Resolve the Zask trigger, putting the Insect on the bottom of your library from your graveyard and causing you to mill two cards
4. Resolve the Verdant Succession trigger, searching your library for that Insect and putting it onto the battlefield
5. Resolve the Altar of Dementia ability from step 1, causing target player to mill cards equal to the Insect's power
6. Repeat

Results

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