Requires

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

Steps

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

Results