Imperial detonators are calibrated to maximize devastation while minimizing collateral damage.

Die Kaiserlichen Detonatoren sind auf maximale Verheerung und minimalen Kollateralschaden kalibriert.

Örtliche Zerstörung

Du erhältst {E} (eine Energiemarke), dann kannst du eine oder mehrere {E} bezahlen. Falls du dies tust, erhält jede Kreatur, die du kontrollierst und deren Stärke gleich der auf diese Weise bezahlten {E} ist, Unzerstörbarkeit bis zum Ende des Zuges.
Zerstöre alle Kreaturen.

Les détonateurs impériaux sont calibrés pour optimiser la destruction tout en réduisant au maximum les dommages collatéraux.

Destruction localisée

Vous gagnez {E} (un marqueur « énergie »), puis vous pouvez payer au moins un {E}. Si vous faites ainsi, chaque créature que vous contrôlez avec une force égale à la quantité de {E} payée de cette manière acquiert l'indestructible jusqu'à la fin du tour.
Détruisez toutes les créatures.

皇国の起爆部隊は、破壊力を最大化しつつも巻き添えを最小限にとどめるように調整されている。

局所的破壊

{E}（エネルギー・カウンター１個）を得る。その後、１個以上の{E}を支払ってもよい。そうしたなら、ターン終了時まで、あなたがコントロールしていてこれにより支払われた{E}の個数に等しいパワーを持つすべてのクリーチャーは破壊不能を得る。
すべてのクリーチャーを破壊する。

Localized Destruction

You get {E} (an energy counter), then you may pay one or more {E}. If you do, each creature you control with power equal to the amount of {E} paid this way gains indestructible until end of turn.
Destroy all creatures.

Modern Horizons 3 Commander

You get {E}, then you may pay one or more {E}. If you do, each creature you control with power equal to the amount of {E} paid this way gains indestructible until end of turn.
Destroy all creatures.

Energy counters are a kind of counter that a player may have. They're not associated with any specific permanents.

Energy counters aren't mana. They don't go away as steps, phases, and turns end, and effects that add mana "of any type" can't give you energy counters.

If a spell or ability with one or more targets states that you "may pay" some amount of {E}, and each permanent that it targets has become an illegal target, the spell or ability won't resolve. You can't pay any {E} even if you want to.

If an effect says you get one or more {E}, you get that many energy counters. To pay one or more {E}, you lose that many energy counters. You can't pay more energy counters than you have. Any effects that interact with counters a player gets, has, or loses can interact with energy counters.

Keep track of how many energy counters each player has. Potential ways to track this include writing theme down on paper or using dice, but any method that is clear and mutually agreeable is fine. (At higher levels of tournament play, dice may not be allowed for tracking counters that players have.)

Some spells and abilities that give you {E} may require targets. If each target chosen is an illegal target as that spell or ability tries to resolve, it won't resolve. You won't get any {E}.

Some triggered abilities state that you "may pay" a certain amount of {E}. You can't pay that amount multiple times to multiply the effect. You simply choose whether or not to pay that amount of {E} as the ability resolves.

Some triggered abilities that state that you "may pay" a certain amount of {E} describe an effect that happens "If you do." In that case, no player may take actions to try to stop the ability's effect after you make your choice. If the payment is followed by the phrase "When you do," then you'll choose any targets for that reflexive triggered ability and put it on the stack before players can take actions.

{E} is the energy symbol. It represents one energy counter.