Finale of PromiseFOIL
Buy at Card Kingdom$12.99

Cheapest priced copy (Outlaws of Thunder Junction Commander): $1.29 at Card Kingdom, near mint, their price list as of .

Finale of Promise {X}{R}{R}

Sorcery · Mythic · War of the Spark Promos · #127s

You may cast up to one target instant card and/or up to one target sorcery card from your graveyard each with mana value X or less without paying their mana costs. If a spell cast this way would be put into your graveyard, exile it instead. If X is 10 or more, copy each of those spells twice. You may choose new targets for the copies.

3 printings · $1.29 to $12.99 at Card Kingdom
SetNumberRarityCard KingdomFoil
Outlaws of Thunder Junction Commander166Mythic$1.29—
War of the Spark Promos127sMythic—$12.99
War of the Spark127Mythic$1.29$8.99
8 rulings from Wizards of the Coast
  1. 3 May 2019The copies that Finale of Promise creates are created on the stack, so they're not "cast." Abilities that trigger when a player casts a spell won't trigger.
  2. 3 May 2019If the spell that's copied is modal (that is, it says "Choose one—" or the like), the copies will have the same mode or modes. You can't choose different ones.
  3. 3 May 2019As Finale of Promise resolves, first you cast the target instant card and/or the target sorcery card in either order. Then, if X is 10 or more, you copy each of those twice and put the copies on the stack in any order. The copies will resolve before the original spells.
  4. 3 May 2019You can't choose to pay any additional costs for the copies. However, effects based on any additional costs that were paid for the original spell are copied as though those same costs were paid for the copy too.
  5. 3 May 2019A split card that's an instant and a sorcery card may be the target of Finale of Promise twice. However, once you cast that card once, it can't be cast a second time.
  6. 3 May 2019If you cast a card "without paying its mana cost," you can't choose to cast it for any alternative costs. You can, however, pay additional costs. If the card has any mandatory additional costs, such as that of Spark Harvest, you must pay those to cast the card.
  7. 3 May 2019If a spell has {X} in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.
  8. 3 May 2019If 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.