Riku of Two Reflections + Narset's Reversal + Beacon of Tomorrows

Riku of Two Reflections

Narset's Reversal

Beacon of Tomorrows

How it works

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

This hypnotic loop allows you to bend time to your absolute will, locking down the game through an endless succession of extra turns. The engine relies on Riku of Two Reflections to duplicate your spells—specifically fueling a clever interaction with Narset's Reversal that not only copies your spells but safely returns them to your hand. By constantly recycling Beacon of Tomorrows back into your hand instead of letting it shuffle away into your library, you ensure a continuous supply of time-warping magic turn after turn.