Koll, the Forgemaster, Phyrexian Altar, Obsidian Battle-Axe, and Fireblade Charger

Prerequisites

• Koll, the Forgemaster on the battlefield
• Phyrexian Altar on the battlefield
• Obsidian Battle-Axe on the battlefield
• Fireblade Charger in hand
• available

Steps

1. Cast Fireblade Charger by paying
2. Fireblade Charger enters the battlefield, triggering Obsidian Battle-Axe, attaching it to Fireblade Charger
3. Activate Phyrexian Altar by sacrificing Fireblade Charger, adding
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

Results

• Infinite damage
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count