How can you create a combo with Koll, the Forgemaster, Skirk Prospector, Umbral Mantle?
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[START OF COMBO]This combo can be formed with Koll, the Forgemaster, Skirk Prospector, Umbral Mantle

Color identity: RW
Mana cost: 
Steps:
  1. Activate Umbral Mantle's equip ability by paying {0}, attaching it to Skirk Prospector.
  2. Activate Skirk Prospector by sacrificing it, adding {R}.
  3. When Skirk Prospector dies, Koll triggers, returning Skirk Prospector from your graveyard to your hand.
  4. Cast Skirk Prospector by paying {R}.
  5. Repeat.[END OF COMBO STEPS]

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

Other prerequisites:
  - All permanants must be on the battlefield
[END OF COMBO PREREQUISITES]
assistant