How can you create a combo with Koll, the Forgemaster, Phyrexian Altar, Obsidian Battle-Axe, Fireblade Charger?
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[START OF COMBO]This combo can be formed with Koll, the Forgemaster, Phyrexian Altar, Obsidian Battle-Axe, Fireblade Charger

Color identity: RW
Mana cost: {R}
Steps:
  1. Cast Fireblade Charger by paying {R}.
  2. Fireblade Charger enters the battlefield, triggering Obsidian Battle-Axe, attaching it to Fireblade Charger.
  3. Activate Phyrexian Altar by sacrificing Fireblade Charger, adding {R}.
  4. Fireblade Charger dies, triggering itself and Koll.
  5. Resolve Fireblade Charger's trigger, dealing 3 damage to any target.
  6. Resolve Koll's trigger, returning Fireblade Charger from your graveyard to your hand.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite damage
  - 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:
  - Koll, the Forgemaster must be on the battlefield
  - Phyrexian Altar must be on the battlefield
  - Obsidian Battle-Axe must be on the battlefield
  - Fireblade Charger must be in your hand
[END OF COMBO PREREQUISITES]
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