How can you create a combo with Beck // Call, Llanowar Mentor, Earthcraft, Intruder Alarm?
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[START OF COMBO]This combo can be formed with Beck // Call, Llanowar Mentor, Earthcraft, Intruder Alarm

Color identity: GWU
Mana cost: {G}{W}
Steps:
  1. Cast Beck by paying {G}{W}, allowing you to draw a card whenever a creature enters the battlefield this turn.
  2. Activate a basic Forest you control by tapping it, adding {G}.
  3. Activate Llanowar Mentor by paying {G}, tapping it and discarding a card, creating a 1/1 Llanowar Elves creature token.
  4. The Llanowar Elves token enters the battlefield, triggering Intruder Alarm and Beck.
  5. Resolve the Intruder Alarm trigger, untapping all creatures.
  6. Resolve the Beck trigger, causing you to draw a card.
  7. Activate Earthcraft by tapping the Llanowar Elves token, untapping a basic Forest you control.
  8. Repeat from step 2.[END OF COMBO STEPS]

Result:
  - Infinite draw triggers
  - Infinite looting
  - Infinite self-discard triggers
  - Near-infinite creature tokens
  - Near-infinite enters the battlefield
  - Near-infinite mana basic lands you control can produce
  - Near-infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Beck // Call must be in your hand
  - Llanowar Mentor must be on the battlefield
  - Earthcraft 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.
  - You control a basic Forest.
[END OF COMBO PREREQUISITES]
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