How can you create a combo with Dualcaster Mage, Echo Storm, Encroaching Mycosynth?
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[START OF COMBO]This combo can be formed with Dualcaster Mage, Echo Storm, Encroaching Mycosynth

Color identity: UR
Mana cost: {3}{U}{U}
Steps:
  1. Cast Echo Storm by paying {3}{U}{U}, targeting Dualcaster Mage.
  2. Echo Storm triggers, creating a copy of itself, targeting Dualcaster Mage.
  3. Resolve the copy of Echo Storm, creating a token copy of Dualcaster Mage.
  4. When the Dualcaster Mage token enters the battlefield, it triggers, creating a copy of Echo Storm, targeting Dualcaster Mage.
  5. Repeat from step 3.[END OF COMBO STEPS]

Result:
  - Infinite creature tokens
  - Infinite enters the battlefield
  - Infinite magecraft triggers[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - Dualcaster Mage must be on the battlefield
  - Echo Storm must be in your hand
  - Encroaching Mycosynth must be on the battlefield
  - You've cast your commander from the command zone at least once this game.
[END OF COMBO PREREQUISITES]
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