Zask, Skittering Swarmlord, Universal Automaton, Ashnod's Altar, and Winding Canyons

Prerequisites

• Zask, Skittering Swarmlord on the battlefield
• Universal Automaton in hand or in the graveyard
• Ashnod's Altar on the battlefield
• Winding Canyons on the battlefield
• available

Steps

1. Activate Winding Canyons' second ability by paying and tapping it, allowing you to cast creature spells as though they have flash this turn
2. Cast Universal Automaton from your hand or graveyard by paying
3. Activate Ashnod's Altar by sacrificing Universal Automaton, adding
4. When Universal Automaton dies, Zask triggers
5. Holding priority, cast Universal Automaton from your graveyard by paying
6. Resolve the Zask trigger, causing you to mill two cards
7. Repeat from step 3

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite self-mill
• Infinite colorless mana
• Infinite storm count