Koll, the Forgemaster, Kemba, Kha Enduring, and Phyrexian Altar

Prerequisites

• Koll, the Forgemaster on the battlefield
• Kemba, Kha Enduring on the battlefield
• Phyrexian Altar on the battlefield
• You control a Cat with an Equipment attached that can be cast using one colored mana

Steps

1. Activate Phyrexian Altar by sacrificing the Cat, adding one mana of any color
2. The Cat dies, triggering Koll, returning the Cat from your graveyard to your hand
3. Cast the Cat by paying its mana cost
4. The Cat enters the battlefield, triggering Kemba, attaching any equipment you control to the Cat
5. Repeat

Results

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