Myrel, Shield of Argive + Lithoform Engine + Clock of Omens + Ashnod's Altar
Myrel, Shield of Argive
Lithoform Engine
Clock of Omens
Ashnod's Altar
Infinite colorless manaInfinite creature tokensInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite mana artifacts you control can produceInfinite creature sacrifice triggersInfinite untap of artifacts you control
How it works
Declare Myrel as an attacker, triggering its ability.
Holding priority, activate Lithoform Engine's first ability by paying 2 and tapping it, copying Myrel's ability.
Resolve the copy of Myrel's ability, creating at least two 1/1 Soldier artifact creature tokens.
Activate Clock of Omens by tapping two Soldiers, untapping Lithoform Engine.
Activate Ashnod's Altar by sacrificing a Soldier, adding CC.