Koll, the Forgemaster, Phyrexian Altar, Veteran's Armaments, and Arcbound Javelineer

Prerequisites

• Koll, the Forgemaster on the battlefield
• Phyrexian Altar on the battlefield
• Veteran's Armaments on the battlefield
• Arcbound Javelineer in hand
• You control an additional artifact creature
• available

Steps

1. Cast Arcbound Javelineer by paying
2. Arcbound Javelineer enters the battlefield, triggering Veteran's Armaments, attaching it to Arcbound Javelineer
3. Activate Phyrexian Altar by sacrificing Arcbound Javelineer, adding
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

Results

• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinitely large artifact creatures
• Infinite sacrifice triggers
• Infinite storm count