Nemesis der Sterblichen

Die Nemesis der Sterblichen kostet beim Wirken für jede Kreaturenkarte in deinem Friedhof {1} weniger.
{7}{G}{G}: Monstrum 5. Das Aktivieren dieser Fähigkeit kostet für jede Kreaturenkarte in deinem Friedhof {1} weniger. (Falls diese Kreatur nicht monströs ist, lege fünf +1/+1-Marken auf sie und sie wird monströs.)

Némesis de los mortales

Cuesta {1} menos lanzar la Némesis de los mortales por cada carta de criatura en tu cementerio.
{7}{G}{G}: Monstruosidad 5. Cuesta {1} menos activar esta habilidad por cada carta de criatura en tu cementerio. (Si esta criatura no es monstruosa, pon cinco contadores +1/+1 sobre ella y se convierte en monstruosa.)

Némésis des mortels

La Némésis des mortels coûte {1} de moins à lancer pour chaque carte de créature dans votre cimetière.
{7}{G}{G} : Monstruosité 5. Cette capacité coûte {1} de moins à activer pour chaque carte de créature dans votre cimetière. (Si cette créature n'est pas monstrueuse, mettez cinq marqueurs +1/+1 sur elle et elle devient monstrueuse.)

Nemesi dei Mortali

La Nemesi dei Mortali costa {1} in meno per essere lanciata per ogni carta creatura nel tuo cimitero.
{7}{G}{G}: Mostruosità 5. Questa abilità costa {1} in meno per essere attivata per ogni carta creatura nel tuo cimitero. (Se questa creatura non è mostruosa, metti cinque segnalini +1/+1 su di essa e diventa mostruosa.)

定命の者の宿敵

定命の者の宿敵を唱えるためのコストは、あなたの墓地にあるクリーチャー・カード１枚につき{1}少なくなる。
{7}{G}{G}：怪物化５を行う。この能力を起動するためのコストは、あなたの墓地にあるクリーチャー・カード１枚につき{1}少なくなる。（このクリーチャーが怪物的でない場合、これの上に＋１/＋１カウンターを５個置く。これは怪物的になる。）

필멸자의 적

필멸자의 적은 당신의 무덤에 있는 생물 카드 한 장당 발동하는 데 {1}가 덜 든다.
{7}{G}{G}: 괴수화 5. 이 능력은 당신의 무덤에 있는 생물 카드 한 장당 발동하는 데 {1}가 덜 든다. (이 생물이 괴수화하지 않았다면, 이 생물에 +1/+1 카운터 다섯 개를 올려놓는다. 이 생물은 괴수화한다.)

Nêmesis dos Mortais

Nêmesis dos Mortais custa {1} a menos para ser conjurada para cada card de criatura no seu cemitério.
{7}{G}{G}: Monstruosidade 5. Esta habilidade custa {1} a menos para ser ativada para cada card de criatura no seu cemitério. (Se esta criatura não for monstruosa, coloque cinco marcadores +1/+1 nela e ela se tornará monstruosa.)

Бич Смертных

Стоимость разыгрывания Бича Смертных уменьшается на {1} за каждую карту существа на вашем кладбище.
{7}{G}{G}: Чудовищность 5. Стоимость активации этой способности уменьшается на {1} за каждую карту существа на вашем кладбище. (Если это существо не является чудовищным, положите на него пять жетонов +1/+1, и оно становится чудовищным.)

生灵宿敌

你坟墓场中每有一张生物牌，生灵宿敌便减少{1}来施放。
{7}{G}{G}：蛮化5。你坟墓场中每有一张生物牌，此异能便减少{1}来起动。（如果此生物未蛮化，则在其上放置五个+1/+1指示物且它蛮化。）

生靈宿敵

你墳墓場中每有一張生物牌，生靈宿敵便減少{1}來施放。
{7}{G}{G}：蠻化5。你墳墓場中每有一張生物牌，此異能便減少{1}來起動。（如果此生物未蠻化，則在其上放置五個+1/+1指示物且它蠻化。）

Nemesis of Mortals

This spell costs {1} less to cast for each creature card in your graveyard.
{7}{G}{G}: Monstrosity 5. This ability costs {1} less to activate for each creature card in your graveyard. (If this creature isn't monstrous, put five +1/+1 counters on it and it becomes monstrous.)

Theros

Nemesis of Mortals costs {1} less to cast for each creature card in your graveyard.
{7}{G}{G}: Monstrosity 5. This ability costs {1} less to activate for each creature card in your graveyard. (If this creature isn't monstrous, put five +1/+1 counters on it and it becomes monstrous.)

An ability that triggers when a creature becomes monstrous won't trigger if that creature isn't on the battlefield when its monstrosity ability resolves.

Monstrous isn't an ability that a creature has. It's just something true about that creature. If the creature stops being a creature or loses its abilities, it will continue to be monstrous.

Neither the cost-reducing ability of Nemesis of Mortals nor the condition of its monstrosity ability can reduce the colored mana requirement of those costs.

Once a creature becomes monstrous, it can't become monstrous again. If the creature is already monstrous when the monstrosity ability resolves, nothing happens.

Once you declare you're casting Nemesis of Mortals or activating its ability, it's too late for players to try to change the number of creature cards in your graveyard to affect the cost of doing so.