Sethron, Hurloon General, Cloudstone Curio, Universal Automaton, and Mana Echoes

Prerequisites

• Sethron, Hurloon General on the battlefield
• Cloudstone Curio on the battlefield
• Universal Automaton in hand
• Mana Echoes on the battlefield
• available

Steps

1. Cast Universal Automaton by paying
2. Universal Automaton enters the battlefield, triggering Mana Echoes and Sethron
3. Resolve the Mana Echoes trigger, adding for each creature you control
4. Resolve the Sethron trigger, creating a 2/2 Minotaur creature token
5. The Minotaur enters the battlefield, triggering Cloudstone Curio and Mana Echoes
6. Resolve the Cloudstone Curio trigger, returning Universal Automaton from the battlefield to your hand
7. Resolve the Mana Echoes trigger, adding for each Minotaur you control
8. Repeat

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite ETB
• Infinite LTB
• Infinite storm count