It's not just the wind. It's not all in your head. And it's *definitely* something to worry about.

ただの風の音ではない。思い過ごしでもない。間違いなく気にかけた方がよい。

夜の衝突

対戦相手１人を対象とする。そのプレイヤーは３点のライフを失う。フラッシュバック {5}{R} （あなたはフラッシュバック・コストで、このカードをあなたの墓地からプレイしてもよい。その後、これを追放する。）

Bump in the Night

Target opponent loses 3 life.
Flashback {5}{R} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Shadows of the Past

Duel Decks: Sorin vs. Tibalt

Innistrad

A spell cast using flashback will always be exiled afterward, whether it resolves, is countered, or leaves the stack in some other way.

If a card with flashback is put into your graveyard during your turn, you can cast it if it’s legal to do so before any other player can take any actions.

To determine the total cost of a spell, start with the mana cost or alternative cost (such as a flashback cost) you’re paying, add any cost increases, then apply any cost reductions. The mana value of the spell is determined only by its mana cost, no matter what the total cost to cast the spell was.

You can cast a spell using flashback even if it was somehow put into your graveyard without having been cast.

You must still follow any timing restrictions and permissions, including those based on the card’s type. For instance, you can cast a sorcery using flashback only when you could normally cast a sorcery.

“Flashback [cost]” means “You may cast this card from your graveyard by paying [cost] rather than paying its mana cost” and “If the flashback cost was paid, exile this card instead of putting it anywhere else any time it would leave the stack.”