Hydra-Brutwächterin

{X}{X}{G}: Monstrum X. (Falls diese Kreatur nicht monströs ist, lege X +1/+1-Marken auf sie und sie wird monströs.)
Wenn die Hydra-Brutwächterin monströs wird, erzeuge X X/X grüne Hydra-Kreaturenspielsteine.

Hidra ama de la progenie

{X}{X}{G}: Monstruosidad X. (Si esta criatura no es monstruosa, pon X contadores +1/+1 sobre ella y se convierte en monstruosa.)
Cuando la Hidra ama de la progenie se convierta en monstruosa, crea X fichas de criatura Hidra verdes X/X.

Maître de couvée hydre

{X}{X}{G} : Monstruosité X. (Si cette créature n'est pas monstrueuse, mettez X marqueurs +1/+1 sur elle et elle devient monstrueuse.)
Quand le Maître de couvée hydre devient monstrueux, créez X jetons de créature X/X verte Hydre.

Idra Protettrice della Covata

{X}{X}{G}: Mostruosità X. (Se questa creatura non è mostruosa, metti X segnalini +1/+1 su di essa e diventa mostruosa.)
Quando l'Idra Protettrice della Covata diventa mostruosa, crea X pedine creatura Idra X/X verdi.

ハイドラの繁殖主

{X}{X}{G}：怪物化Ｘを行う。（このクリーチャーが怪物的でないなら、これの上に＋１/＋１カウンターＸ個を置く。これは怪物的になる。）
ハイドラの繁殖主が怪物的になったとき、緑のＸ/Ｘのハイドラ・クリーチャー・トークンＸ体を生成する。

Hidra Criadeira

{X}{X}{G}: Monstruosidade X. (Se esta criatura não for monstruosa, coloque X marcadores +1/+1 nela e ela se tornará monstruosa.)
Quando Hidra Criadeira se tornar monstruosa, crie X fichas de criatura Hidra verde X/X.

Гидра-Породительница

{X}{X}{G}: Чудовищность X. (Если это существо не является чудовищным, положите на него X жетонов +1/+1, и оно становится чудовищным.)
Когда Гидра-Породительница становится чудовищной, создайте X фишек существа X/X зеленая Гидра.

护卵多头龙

{X}{X}{G}：蛮化X。（如果此生物未蛮化，则在其上放置X个+1/+1指示物且它已蛮化。）
当护卵多头龙蛮化时，派出X个X/X绿色多头龙衍生生物。

護卵多頭龍

{X}{X}{G}：蠻化X。（如果此生物未蠻化，則在其上放置X個+1/+1指示物且它已蠻化。）
當護卵多頭龍蠻化時，派出X個X/X綠色多頭龍衍生生物。

Hydra Broodmaster

{X}{X}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
When this creature becomes monstrous, create X X/X green Hydra creature tokens.

Modern Horizons 3 Commander

{X}{X}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
When Hydra Broodmaster becomes monstrous, create X X/X green Hydra creature tokens.

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{X}{X}{G}: Monstrosity X. (If this creature isn't monstrous, put X +1/+1 counters on it and it becomes monstrous.)
When Hydra Broodmaster becomes monstrous, put X X/X green Hydra creature tokens onto the battlefield.

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.

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

The value of each X in Hydra Broodmaster's last ability is equal to the value chosen for X when its monstrosity ability was activated.