Koll, the Forgemaster, Phyrexian Altar, Veteran's Armaments, and Doomed Traveler

Prerequisites

• Koll, the Forgemaster on the battlefield
• Phyrexian Altar on the battlefield
• Veteran's Armaments on the battlefield
• Doomed Traveler in hand
• available

Steps

1. Cast Doomed Traveler by paying
2. Doomed Traveler enters the battlefield, triggering Veteran's Armaments, attaching it to Doomed Traveler
3. Activate Phyrexian Altar by sacrificing Doomed Traveler, adding
4. Doomed Traveler dies, triggering itself and Koll
5. Resolve Doomed Traveler's trigger, creating a 1/1 Spirit token
6. Resolve Koll's trigger, returning Doomed Traveler from your graveyard to your hand
7. Repeat
8. Once you have infinite creature tokens, you may activate Phyrexian Altar any number of times, adding infinite mana

Results

• Infinite colored mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count