Infinite colored manaInfinite colorless manaInfinite creature tokensInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite creature sacrifice triggersInfinite mana permanents you control can produce
How it works
Activate Ashnod's Altar by sacrificing Myr Battlesphere, adding CC.
Activate Othelm by paying 2 and tapping it, returning Myr Battlesphere from your graveyard to the battlefield tapped.
Myr Battlesphere enters the battlefield, creating four 1/1 Myr artifact creature tokens.
Activate Clock of Omens by tapping two Myr tokens, untapping Othelm.