Requires

Riku of Two Reflections must be on the battlefield. Narset's Reversal must be in hand. Time Warp must be in hand. Mana needed: each turn

Steps

1. Cast Time Warp by paying .
2. Riku's first ability triggers - choose not to pay.
3. Holding priority, cast Narset's Reversal by paying , targeting Time Warp.
4. Riku's first ability triggers, causing you to pay to copy Narset's Reversal, with the copy targeting the original Narset's Reversal.
5. Resolve the copy of Narset's Reversal, copying the original Narset's Reversal targeting Time Warp, and returning the original Narset's Reversal to your hand.
6. Resolve the copy of Narset's Reversal created in step 5, copying Time Warp and returning the original Time Warp to your hand.
7. Resolve Time Warp, causing you to take an extra turn after this one.
8. Repeat each turn.

Results