Didgeridoo, Cloudstone Curio, and Mana Echoes

Prerequisites

• Didgeridoo on the battlefield
• Cloudstone Curio on the battlefield
• Mana Echoes on the battlefield
• You have a nonartifact Minotaur creature card in hand
• You control at least three Minotaurs, one of which must be a nontoken, nonartifact creature

Steps

1. Activate Didgeridoo by paying , putting any nonartifact Minotaur from your hand onto the battlefield
2. The Minotaur enters the battlefield, triggering Cloudstone Curio and Mana Echoes
3. Resolve the Mana Echoes trigger, adding for each Minotaur you control
4. Resolve the Cloudstone Curio trigger, returning any other nontoken, nonartifact Minotaur from the battlefield to your hand
5. Repeat

Results

• Infinite colorless mana
• Infinite ETB
• Infinite LTB