Narset's Reversal

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partners: Twinning Staff, Reverberate, Expansion // Explosion, Return the Favor, Reiterate, Approach of the Second Sun, Increasing Vengeance, Twincast, Flare of Duplication, Insidious Will, Fork, Wild Ricochet
• B2 Core — Not in the same deck as its two-card combo partners: Twinning Staff, Reverberate, Expansion // Explosion, Return the Favor, Reiterate, Approach of the Second Sun, Increasing Vengeance, Twincast, Flare of Duplication, Insidious Will, Fork, Wild Ricochet
• B3 Upgraded — allowed: Its two-card combos are not early, which Bracket 3 allows
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Twinning Staff, Reverberate, Expansion // Explosion, Return the Favor, Reiterate, Approach of the Second Sun, Increasing Vengeance, Twincast, Flare of Duplication, Insidious Will, Fork, Wild Ricochet (none of them early)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

164 known combos, 12 of them two-card.

• Narset's Reversal + Isochron Scepter
  Produces: Infinite turns, Lock
  View on Commander Spellbook
• Twinning Staff + Narset's Reversal
  Produces: Infinite magecraft triggers
  View on Commander Spellbook
• Storm-Kiln Artist + Thousand-Year Storm + Narset's Reversal
  Produces: Infinite artifact ETB, Infinite artifact LTB, Infinite artifact sacrifice triggers
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2019-05-03 · Wizards of the Coast
  The copy is created on the stack, so it’s not “cast.” Abilities that trigger when a player casts a spell won’t trigger.
• 2019-05-03 · Wizards of the Coast
  Narset’s Reversal can copy any instant or sorcery spell, not just one with targets.
• 2019-05-03 · Wizards of the Coast
  The copy will have the same targets as the spell it’s copying unless you choose new ones. You may change any number of the targets, including all of them or none of them. If, for one of the targets, you can’t choose a new legal target, then it remains unchanged (even if the current target is illegal).
• 2019-05-03 · Wizards of the Coast
  If the spell that’s copied has an X whose value was determined as it was cast (like Finale of Promise does), the copy will have the same value of X.
• 2019-05-03 · Wizards of the Coast
  If the spell has damage divided as it was cast, the division can’t be changed (although the targets receiving that damage still can). The same is true of spells that distribute counters.
• 2019-05-03 · Wizards of the Coast
  If you copy a spell, you control the copy. Narset’s Reversal and the copy resolve before the original spell would have resolved.
• 2019-05-03 · Wizards of the Coast
  If the spell that’s copied is modal (that is, it says “Choose one —” or the like), the copy will have the same mode. A different mode can’t be chosen.
• 2019-05-03 · Wizards of the Coast
  The controller of a copy can’t choose to pay any alternative or additional costs for the copy. However, effects based on any alternative or additional costs that were paid for the original spell are copied as though those same costs were paid for the copy.
• 2019-05-03 · Wizards of the Coast
  If a copy of a spell is returned to its owner’s hand, it’s moved there, then it will cease to exist as a state-based action.
• 2019-05-03 · Wizards of the Coast
  If a spell is returned to its owner’s hand, it’s removed from the stack and thus will not resolve. The spell isn’t countered; it just no longer exists. This works against a spell that can’t be countered.

Rulings: Scryfall · Wizards of the Coast