When Naru Meha enters the battlefield, it triggers, copying Cabaretti Charm.
Resolve the copy of Cabaretti Charm, creating two 1/1 Citizen creature tokens.
Activate Ashnod's Altar by sacrificing both Citizen tokens, adding CCCC.
Repeat from step 2.
This intricate loop leverages Eldrazi Displacer to repeatedly reset Naru Meha, Master Wizard, with Ashnod's Altar providing the colorless mana needed to sustain the blinking while yielding a surplus. Each time Naru Meha re-enters the battlefield, its triggered ability duplicates Cabaretti Charm on the stack, allowing you to continually resolve the charm's third mode to manufacture a fresh pair of Citizen creature tokens. Those tokens are promptly fed back into Ashnod's Altar to fuel the engine, all while the static pump and wide trample from Cabaretti Charm can be capitalized upon to overwhelm opponents.