Academy Researchers, Fool's Demise, and Ashnod's Altar

Prerequisites

• Academy Researchers on the battlefield
• Fool's Demise on the battlefield
• Ashnod's Altar on the battlefield
• Fool's Demise attached to Academy Researchers

Steps

1. Activate Ashnod's Altar by sacrificing Academy Researchers, adding
2. Academy Researchers dies, triggering Fool's Demise first and second abilities
3. Resolve the second Fool's Demise trigger, returning it from your graveyard to your hand
4. Resolve the first Fool's Demise trigger, returning Academy Researchers from your graveyard to the battlefield
5. Academy Researchers enters the battlefield, putting Fool's Demise onto the battlefield from your hand attached to Academy Researchers
6. Repeat

Results

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