Narset's Reversal + Isochron Scepter + Extra Turn Spell

Ruthless

31,210

Decks

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How it works

Cast the extra turn spell by paying its mana cost.
Holding priority, activate Isochron Scepter by paying and tapping it, casting a copy of Narset's Reversal.
Resolve the copy of Narset's Reversal, causing you to copy the extra turn spell, and return the original extra turn spell to your hand.
Resolve the copy of the extra turn spell, causing you to take at least one extra turn after this one.
Repeat each turn.

In which brackets is this combo allowed, per Spellbook's Ruthless tier?

1–2 · Exhibition & Core

Spellbook classifies this as Ruthless — not for these brackets.

3 · Upgraded

Spellbook classifies this as Ruthless — not for these brackets.

4–5 · Optimized & cEDH

All combos are allowed.