Xyris, the Writhing Storm, Intruder Alarm, Lumengrid Augur, and Ashnod's Altar

Prerequisites

• Xyris, the Writhing Storm on the battlefield
• Intruder Alarm on the battlefield
• Lumengrid Augur on the battlefield
• Ashnod's Altar on the battlefield
• Lumengrid Augur does not have summoning sickness
• available

Steps

1. Activate Lumengrid Augur by paying and tapping it, causing an opponent to loot
2. Xyris' first ability triggers, creating a 1/1 Snake creature token
3. The Snake enters the battlefield, triggering Intruder Alarm, untapping all creatures
4. Activate Ashnod's Altar by sacrificing the Snake, adding
5. Repeat

Results

• Infinite draw triggers for opponents
• Infinite looting for opponents
• Infinite self-discard triggers for opponents
• Near-infinite colorless mana
• Near-infinite creature tokens
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite sacrifice triggers
• Near-infinite untap of all creatures