How can you create a combo with Grinning Ignus, Cloud Key, Prismite, Training Grounds?
user
[START OF COMBO]This combo can be formed with Grinning Ignus, Cloud Key, Prismite, Training Grounds

Color identity: UR
Mana cost: {R}
Steps:
  1. Activate Grinning Ignus by paying {R} and returning it to your hand, adding {C}{C}{R}.
  2. Cast Grinning Ignus by paying {1}{R}.
  3. Activate Prismite by paying {1}, adding {R}.
  4. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinite storm count[END OF COMBO RESULT][END OF COMBO]

Other prerequisites:
  - All permanants must be on the battlefield
  - "Creature" chosen with Cloud Key.
[END OF COMBO PREREQUISITES]
assistant