Flashback

From MTG Salvation Wiki

Flashback is a keyword ability on instants and sorceries that allows the player to pay an alternate cost to play the spell directly from his or her graveyard. The spell card is removed from the game when the spell leaves the stack.

The first tournament-legal cards with flashback were printed in Odyssey block, with a later set being printed in the Time Spiral block.

From the Comprehensive Rules: 502.22. Flashback 502.22a Flashback appears on some instants and sorceries. It represents two static abilities: one functions while the card is in a player’s graveyard and the other functions while the card is on the stack. “Flashback [cost]” means “You may play this card from your graveyard by paying [cost] rather than paying its mana cost” and “If the flashback cost was paid, remove this card from the game instead of putting it anywhere else any time it would leave the stack.” Playing a spell using its flashback ability follows the rules for paying alternative costs in rules 409.1b and 409.1f–h.

For your reference [CR 409.1b,f-h] 409.1b If the spell or ability is modal (uses the phrase “Choose one —” or “[specified player] chooses one —”), the player announces the mode choice. If the player wishes to splice any cards onto the spell, he or she reveals those cards in his or her hand. If the spell or ability has a variable mana cost (indicated by {X}) or some other variable cost, the player announces the value of that variable at this time. If the spell or ability has alternative, additional, or other special costs (such as buyback, kicker, or convoke costs), the player announces his or her intentions to pay any or all of those costs (see rule 409.1f). You can’t apply two alternative methods of playing or two alternative costs to a single spell or ability. Previously made choices (such as choosing to play a spell with flashback from his or her graveyard or choosing to play a creature with morph face down) may restrict the player’s options when making these choices. 409.1f The player determines the total cost of the spell or ability. Usually this is just the mana cost (for spells) or activation cost (for abilities). Some cards list additional or alternative costs in their text, and some effects may increase or reduce the cost to pay. Costs may include paying mana, tapping permanents, sacrificing permanents, discarding cards, and so on. The total cost is the mana cost, activation cost, or alternative cost, plus all cost increases and minus all cost reductions. Once the total cost is determined, it becomes “locked in.” If effects would change the total cost after this time, they have no effect. 409.1g If the total cost includes a mana payment, the player then has a chance to play mana abilities (see rule 411, “Playing Mana Abilities”). Mana abilities must be played before costs are paid. 409.1h The player pays the total cost in any order. Partial payments are not allowed. Example You play Death Bomb, which costs and has an additional cost of sacrificing a creature. You sacrifice Thunderscape Familiar, whose effect makes your black spells cost less to play. Because a spell’s total cost is “locked in” before payments are actually made, you pay , not , even though you’re sacrificing the Familiar.

[edit] Rulings

• When you play a spell from your graveyard by paying its flashback cost, its mana cost doesn't change. You just pay the flashback cost instead.
• Effects that cause you to pay more or less for a spell will cause you to pay that much more or less for its flashback cost, too. That's because they affect the total cost of the spell, not its mana cost.
• When a spell played with flashback resolves, it never goes to its owner's graveyard, so abilities that trigger on cards being put in a graveyard won't trigger. The card is removed from the game instead.
• If a spell with flashback is countered, it's still removed from the game rather than being put into its owner's graveyard.

[edit] Notable cards with flashback and their applications

1. Cabal Therapy has been (understandably) referred to as the "greatest discard spell ever printed." In the hands of a skilled player, it has the ability to strip an opponents hands of relevant cards while still being able to view the rest of their hand. The flashback cost can also be a boon in the correct deck, thus making Cabal Therapy a threat most decks do not wish to see.
2. Call of the Herd was a tournament staple from the very onset. Offering a reasonably costed 3/3 token the first time it is cast, the card advantage from flashing back the card is still very powerful. It also allowed many beatdown decks of the era to recover after a Wrath of God or other global removal. It is still used today in extended Rock.