Rite of Harmony, Llanowar Mentor, Phyrexian Altar, and Intruder Alarm

Prerequisites

• Rite of Harmony in hand
• Llanowar Mentor on the battlefield
• Phyrexian Altar on the battlefield
• Intruder Alarm on the battlefield
• Llanowar Mentor does not have summoning sickness
• You have at least one additional card in hand
• available

Steps

1. Cast Rite of Harmony by paying , allowing you to draw a card whenever a creature enters the battlefield this turn
2. Activate Llanowar Mentor by paying , tapping it and discarding a card, creating a 1/1 Llanowar Elves creature token
3. The Llanowar Elves token enters the battlefield, triggering Intruder Alarm and Rite of Harmony
4. Resolve the Intruder Alarm trigger, untapping all creatures
5. Resolve the Rite of Harmony trigger, causing you to draw a card
6. Activate Phyrexian Altar by sacrificing the Llanowar Elves token, adding
7. Repeat from step 2

Results

• Infinite draw triggers
• Infinite looting
• Infinite self-discard triggers
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite sacrifice triggers
• Near-infinite untap of all creatures