黄金夜の刃、ギセラ

飛行、先制攻撃
発生源１つが対戦相手か対戦相手がコントロールしてい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かパーマネントにその点数の２倍のダメージを与える。
発生源１つがあなたかあなたがコントロールしているパーマネントにダメージを与えるなら、そのダメージの端数を切り上げた半分を軽減する。

金夜之刃姬瑟拉

飞行，先攻
如果某来源将向任一对手或由对手操控的永久物造成伤害，则改为该来源对该牌手或永久物造成两倍的伤害。
如果某来源将对你或任一由你操控的永久物造成伤害，则防止该伤害的一半，小数点后进位。

Gisela, Blade of Goldnight

Flying, first strike
If a source would deal damage to an opponent or a permanent an opponent controls, that source deals double that damage to that player or permanent instead.
If a source would deal damage to you or a permanent you control, prevent half that damage, rounded up.

Murders at Karlov Manor Commander

Commander Masters

The List

Gisela doubles damage dealt to opponents and permanents your opponents control from any source, including sources controlled by those opponents.

If damage dealt by a source you control is being divided or assigned among multiple permanents an opponent controls or among an opponent and one or more permanents they control simultaneously, divide the original amount and double the results. For example, if you attack with a 5/5 creature with trample and your opponent blocks with a 2/2 creature, you can assign 2 damage to the blocker and 3 damage to the defending player. These amounts are then doubled to 4 and 6 damage, respectively. You can't double the damage to 10 first and then assign 2 to the creature and 8 to the player.

If multiple replacement effects would modify how damage would be dealt, the player being dealt damage (or the controller of the permanent being dealt damage) chooses the order in which to apply those effects.