({2} magic symbol) ({U} magic symbol) ({U} magic symbol) plus enough mana to pay for commander tax, if applicable available.
Steps
Cast
Mirage Mockery by paying its mana cost, targeting a creature you control.
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
Mirage Mockery, targeting
Naru Meha.
Resolve the copy of
Mirage Mockery, creating a token copy of
Naru Meha.
Put either
Naru Meha into your graveyard due to the legend rule.
Repeat from step 3.
Notes
You may also choose to pay
Mirage Mockery's entwine cost and target an artifact creature you control, if desired.
Results
Infinite death triggers.
Infinite ETB.
Infinite LTB.
Infinite magecraft triggers.
Infinite creature tokens.
Infinite copies of artifact creatures you control.