Gather Specimens by paying ({3} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) , causing all creatures that would be created under an opponent's control this turn to be created under you control instead.
Cast
Fractured Identity by paying ({3} magic symbol) ({W} magic symbol) ({U} magic symbol) , targeting any permanent.
Holding priority, cast
Naru Meha by paying ({2} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Naru Meha enters the battlefield, creating a copy of
Fractured Identity, targeting
Naru Meha.
Resolve the copy of
Fractured Identity, exiling
Naru Meha and creating a copy of
Naru Meha for each opponent you have.
Put all but one
Naru Meha token into your graveyard due to the legend rule.
The
Naru Meha token(s) enter the battlefield, creating a copy of
Fractured Identity targeting
Naru Meha, and any other instants and/or sorceries on the stack.
Repeat from step 5.
You may also have the additional triggers target permanents your opponent control to exile them and create token copies of them.
Results
Exile any number of nonland permanents.
Infinite copies of any instants and/or sorceries on the stack.
Infinite copies of any nonland permanents on the battlefield.