馬力充電
インスタント
あなたがコントロールするクリーチャー１体を対象とする。それはターン終了時まで＋２/＋０の修整を受ける。
超過 
（あなたはこの呪文をその超過コストで唱えてもよい。そうした場合、あなたがコントロールしている各クリーチャーは、ターン終了時までそれぞれ＋２/＋０の修整を受ける。）
勝率を五分五分にしたければ、ちょっとした稲妻が一番だ。
イラスト：
Return to Ravnica#92コモン日本語適正
裁定
Casting a spell with overload doesn’t change that spell’s mana cost. You just pay the overload cost instead.
Because a spell with overload doesn’t target when its overload cost is paid, it may affect permanents with hexproof or with protection from the appropriate color.
Note that if the spell with overload is dealing damage, protection from that spell’s color will still prevent that damage.
Overload doesn’t change when you can cast the spell.
If you don’t pay the overload cost of a spell, that spell will have a single target. If you pay the overload cost, the spell won’t have any targets.
Effects that cause you to pay more or less for a spell will cause you to pay that much more or less while casting it for its overload cost, too.
If you are instructed to cast a spell with overload “without paying its mana cost,” you can’t choose to pay its overload cost instead.
An overloaded Dynacharge affects only creatures you control at the time it resolves. Creatures you begin to control later in the turn won’t get +2/+0.