Matter Reshaper, Mortuary, and Phyrexian Altar

Prerequisites

• Matter Reshaper on the battlefield
• Mortuary on the battlefield
• Phyrexian Altar on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Matter Reshaper, adding one mana of any color
2. Matter Reshaper dies, triggering itself and Mortuary
3. Resolve the Mortuary trigger, putting Matter Reshaper on top of your library from your graveyard
4. Resolve the Matter Reshaper trigger, revealing Matter Reshaper from the top of your library and putting it onto the battlefield
5. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers