How can you create a combo with Rite of Harmony, Llanowar Mentor, Phyrexian Altar, Intruder Alarm?
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[START OF COMBO]This combo can be formed with Rite of Harmony, Llanowar Mentor, Phyrexian Altar, Intruder Alarm

Color identity: GWU
Mana cost: {G}{G}{W}
Steps:
  1. Cast Rite of Harmony by paying {G}{W}, allowing you to draw a card whenever a creature enters the battlefield this turn.
  2. Activate Llanowar Mentor by paying {G}, 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 {G}.
  7. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite draw triggers
  - Infinite looting
  - Infinite self-discard triggers
  - Near-infinite death triggers
  - Near-infinite enters the battlefield
  - Near-infinite leaves the battlefield
  - Near-infinite sacrifice triggers
  - Near-infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Rite of Harmony must be in your hand
  - Llanowar Mentor must be on the battlefield
  - Phyrexian Altar must be on the battlefield
  - Intruder Alarm must be on the battlefield
  - Llanowar Mentor does not have summoning sickness.
  - You have at least one additional card in hand.
[END OF COMBO PREREQUISITES]
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