How can you create a combo with Koll, the Forgemaster, Phyrexian Altar, Veteran's Armaments, Arcbound Javelineer?
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[START OF COMBO]This combo can be formed with Koll, the Forgemaster, Phyrexian Altar, Veteran's Armaments, Arcbound Javelineer

Color identity: RW
Mana cost: {W}
Steps:
  1. Cast Arcbound Javelineer by paying {W}.
  2. Arcbound Javelineer enters the battlefield, triggering Veteran's Armaments, attaching it to Arcbound Javelineer.
  3. Activate Phyrexian Altar by sacrificing Arcbound Javelineer, adding {W}.
  4. Arcbound Javelineer dies, triggering itself and Koll.
  5. Resolve Arcbound Javelineer's trigger, putting a +1/+1 counter on target artifact creature.
  6. Resolve Koll's trigger, returning Arcbound Javelineer from your graveyard to your hand.
  7. Repeat.[END OF COMBO STEPS]

Result:
  - Infinite death triggers
  - Infinite enters the battlefield
  - Infinite leaves the battlefield
  - Infinitely large artifact creatures
  - 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
  - Veteran's Armaments must be on the battlefield
  - Arcbound Javelineer must be in your hand
  - You control an additional artifact creature.
[END OF COMBO PREREQUISITES]
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