標の稲妻
ソーサリー
クリーチャー１体を対象とする。標の稲妻はそれに、追放領域かあなたの墓地にあり、あなたがオーナーであり、インスタントかソーサリーであるカードの枚数に等しい点数のダメージを与える。
再活（あなたはあなたの墓地から、このカードを、これの他のコストの支払いに加えてカード１枚を捨てることで唱えてもよい。その後、このカードを追放する。）
イラスト：
Guilds of Ravnica#154アンコモン日本語適正
裁定
Beacon Bolt is still on the stack while you count your instant and sorcery cards in your graveyard and in exile. It doesn’t count itself.
If any exiled cards you own are face down, they have no characteristics. If they’re normally instants or sorceries, they won’t be counted.
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 jump-start only when you could normally cast a sorcery.
A spell cast using jump-start will always be exiled afterward, whether it resolves, it’s countered, or it leaves the stack in some other way.
If an effect allows you to pay an alternative cost rather than a spell’s mana cost, you may pay that alternative cost when you jump-start a spell. You’ll still discard a card as an additional cost to cast it.
If a card with jump-start is put into your graveyard during your turn, you’ll be able to cast it right away if it’s legal to do so, before an opponent can take any actions.