Erbitterte Fehde

Sowie die Erbitterte Fehde ins Spiel kommt, bestimme zwei Spieler.
Falls eine Quelle, die einer der bestimmten Spieler kontrolliert, dem anderen bestimmten Spieler oder einer bleibenden Karte, die dieser Spieler kontrolliert, Schaden zufügen würde, fügt sie diesem Spieler oder dieser bleibenden Karte stattdessen doppelt so viele Schadenspunkte zu.

Feudo de amargura

En cuanto el Feudo de amargura entre al campo de batalla, elige dos jugadores.
Si una fuente que controla uno de los jugadores elegidos fuera a hacer daño al otro jugador elegido o a un permanente que controla ese jugador, en vez de eso, esa fuente hace el doble de ese daño a ese jugador o permanente.

Âpre querelle

Au moment où l'Âpre querelle arrive sur le champ de bataille, choisissez deux joueurs.
Si une source contrôlée par l'un des joueurs choisis devait infliger des blessures à l'autre joueur choisi ou à un permanent que ce joueur contrôle, cette source inflige le double de ces blessures à ce joueur ou à ce permanent à la place.

Faida Accanita

Mentre la Faida Accanita entra nel campo di battaglia, scegli due giocatori.
Se una fonte controllata da uno dei giocatori scelti sta per infliggere danno all'altro giocatore scelto o a un permanente controllato da quel giocatore, quella fonte infligge invece il doppio di quel danno a quel giocatore o permanente.

苦々しい抗争

苦々しい抗争が戦場に出るに際し、プレイヤーを２人選ぶ。
選ばれたいずれかのプレイヤーがコントロールする発生源がもう１人の選ばれたプレイヤーまたはそのプレイヤーがコントロールするパーマネントにダメージを与えるなら、代わりにその発生源はそのプレイヤーまたはパーマネントにその点数の２倍のダメージを与える。

苦涩世仇

于苦涩世仇进战场时，选择两位牌手。
如果由其中一位牌手操控的某个来源将对其中另一位牌手或由他操控的某个永久物造成伤害，则改为该来源对后者牌手或永久物造成两倍的伤害。

Bitter Feud

As this enchantment enters, choose two players.
If a source controlled by one of the chosen players would deal damage to the other chosen player or a permanent that player controls, that source deals double that damage to that player or permanent instead.

Commander Anthology Volume II

As Bitter Feud enters the battlefield, choose two players.
If a source controlled by one of the chosen players would deal damage to the other chosen player or a permanent that player controls, that source deals double that damage to that player or permanent instead.

Commander 2014

Bitter Feud applies to damage dealt by any source controlled by one of the chosen players, not just combat damage.

If multiple effects modify how damage is dealt, the player being dealt damage, or the controller of the permanent being dealt damage, chooses the order in which to apply the effects. For example, the ability of Decorated Griffin says “{1}{W}: Prevent the next 1 combat damage that would be dealt to you this turn.” Suppose you control a Decorated Griffin, and you and an opponent are the chosen players for a Bitter Feud. If a creature that player controls would deal 3 combat damage to you, and Decorated Griffin’s ability has resolved once, you can choose to either (a) apply the effect from Decorated Griffin first and prevent 1 damage, and then let Bitter Feud’s effect double the remaining 2 damage, for a result 4 damage being dealt to you, or (b) let Bitter Feud’s effect apply first and double the damage to 6, and then apply the effect from Decorated Griffin to prevent 1 damage, for a result of 5 damage being dealt to you.

If there are two Bitter Feuds on the battlefield, and the same two players were chosen for each, damage dealt will be doubled for each. So, two Bitter Feuds will end up multiplying the damage by four, three will multiply the damage by eight, and four by sixteen.

The source of the damage doesn’t change. A spell that deals damage will specify the source of the damage. This is usually the spell itself. An ability that deals damage will specify the source of the damage, although it will never be the ability itself. Usually the source of the ability is also the source of the damage.