Cayth, Famed Mechanist, Mana Echoes, and Staff of Domination

Prerequisites

• Cayth, Famed Mechanist on the battlefield
• Mana Echoes on the battlefield
• Staff of Domination on the battlefield
• You control at least one creature token
• You control at least five creatures that share a creature type with the creature token
• Cayth does not have summoning sickness
• available

Steps

1. Activate Cayth by paying and tapping it, creating a token copy of a creature token you control
2. When the creature token enters the battlefield, Mana Echoes triggers, adding for each creature you control that shares a creature type with it
3. Activate Staff of Domination's third ability by paying , untapping Cayth
4. Activate Staff of Domination's first ability by paying , untapping it
5. Repeat

Results

• Infinite ETB
• Infinite colorless mana
• Infinite lifegain triggers
• Infinite lifegain
• Infinite card draw
• Infinite untap of creatures you control
• Infinite draw triggers
• Infinite mana creatures you control can produce
• Infinite proliferate
• Infinite copies of creature tokens you control