How can you create a combo with Intruder Alarm, Elemental Mastery?
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[START OF COMBO]This combo can be formed with Intruder Alarm, Elemental Mastery

Color identity: UR
Mana cost: 
Steps:
  1. Activate the creature with Elemental Mastery attached by tapping it, creating a number of 1/1 Elemental creature tokens with haste equal to the creatures power.
  2. The Elementals enter the battlefield, triggering Intruder Alarm that many times.
  3. Resolve each Intruder Alarm trigger, untapping all creatures.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens with haste
  - Infinite enters the battlefield
  - Infinite mana creatures you control can produce
  - Infinite untap of all creatures[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - Elemental Mastery attached to any creature you control without summoning sickness that has power one or greater.
[END OF COMBO PREREQUISITES]
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