There is at least one nonland permanent on the battlefield.
({4} magic symbol) ({C} magic symbol) ({C} magic symbol) ({U} magic symbol) ({U} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
Cast Eldrazi Confluence by paying ({2} magic symbol) ({C} magic symbol) ({C} magic symbol) , choosing its second mode at least once targeting any applicable permanent, and then choosing its second and/or third modes two times.
Holding priority, cast Naru Meha either from your hand or from the command zone by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) plus commander tax, if applicable.
When Naru Meha enters the battlefield, it triggers, copying Eldrazi Confluence, targeting Naru Meha and any other applicable permanent(s), if applicable.
Resolve the copy of Eldrazi Confluence, blinking Naru Meha and any other targeted permanents as applicable, and creating a 1/1 Eldrazi Scion creature token for each time the third mode was chosen.
Repeat from step 3.
You may choose the first mode when casting Eldrazi Confluence - however, you will eventually be forced tot arget your own creatures.
Results
Infinite blinking of nonland permanents you control.