Cast Incarnation Technique by paying its mana cost, targeting any applicable target.
Holding priority, cast Naru Meha by paying its mana cost.
When Naru Meha enters, it triggers, targeting Incarnation Technique.
Holding priority, activate Umbral Collar Zealot by sacrificing Naru Meha.
Resolve the Naru Meha trigger, copying Incarnation Technique, with the copy targeting Naru Meha
Resolve the Incarnation Technique copy, returning Naru Meha from your graveyard to the battlefield.
Repeat from step 3.
This ingenious loop begins by casting Incarnation Technique to mill yourself and set up your graveyard, while taking advantage of its demonstrate ability to kickstart the chain. You then flash in Naru Meha, Master Wizard so that her entry trigger targets the original spell, copying it to ready a future recursion. Before that copy resolves, you leverage Umbral Collar Zealot to sacrifice Naru Meha, feeding the zealot's surveil ability while binning the Wizard right where Incarnation Technique's resolved copy needs her to be. As the copied Incarnation Technique resolves, it plucks Naru Meha straight from your graveyard back to the battlefield, restarting the entire cycle for an endless stream of triggers and self-mill.