Cast Time Warp by paying ({3} magic symbol) ({U} magic symbol) ({U} magic symbol) .
Holding priority, cast Narset's Reversal, choosing to pay its replicate cost once, by paying a total of ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) ({U} magic symbol) , targeting Time Warp.
Narset's Reversal's replicate ability triggers, creating a copy of it targeting the original Narset's Reversal.
Resolve the copy of Narset's Reversal, creating a copy of the original Narset's Reversal targeting Time Warp and returning the original Narset's Reversal to your hand.
Resolve the second copy of Narset's Reversal, creating a copy of Time Warp and returning the original Time Warp to your hand.
Resolve the copy of Time Warp, causing you to take an extra turn after this one.