Fool's Demise, Channel, Phyrexian Altar, and Skemfar Shadowsage

Prerequisites

• Fool's Demise on the battlefield
• Channel in hand
• Phyrexian Altar on the battlefield
• Skemfar Shadowsage on the battlefield
• Fool's Demise attached to Skemfar Shadowsage
• You control at least four creatures that share a creature type
• available

Steps

1. Cast Channel by paying
2. Activate Phyrexian Altar by sacrificing Skemfar Shadowsage, adding
3. When Skemfar Shadowsage dies, Fool's Demise's first and second abilities trigger
4. Resolve the first Fool's Demise trigger, returning Skemfar Shadowsage from your graveyard to the battlefield
5. When Skemfar Shadowsage enters the battlefield, it triggers, causing you to gain at least 4 life
6. Resolve the second Fool's Demise trigger, returning it from your graveyard to your hand
7. Activate Channel four times by paying 4 life, adding
8. Cast Fool's Demise by paying , attaching it to Skemfar Shadowsage
9. Repeat from step 2
10. If you control five or more creatures that share a creature type, this combo nets infinite lifegain and colorless mana

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite lifegain
• Infinite lifegain triggers
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count