Othelm, Sigardian Outcast, Myr Battlesphere, Clock of Omens, Encroaching Mycosynth, and Ashnod's Altar

Prerequisites

• Othelm, Sigardian Outcast on the battlefield
• Myr Battlesphere on the battlefield
• Clock of Omens on the battlefield
• Encroaching Mycosynth on the battlefield
• Ashnod's Altar on the battlefield
• Othelm does not have summoning sickness

Steps

1. Activate Ashnod's Altar by sacrificing Myr Battlesphere, adding
2. Activate Othelm by paying and tapping it, returning Myr Battlesphere from your graveyard to the battlefield tapped
3. Myr Battlesphere enters the battlefield, creating four 1/1 Myr artifact creature tokens
4. Activate Clock of Omens by tapping two Myr tokens, untapping Othelm
5. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite tap triggers
• Infinite untap of any amount of permanents