Infektionsschnalle

Wenn die Infektionsschnalle ins Spiel kommt, lege eine -1/-1-Marke auf eine Kreatur deiner Wahl.
{4}, {T}: Wucherung. (Du bestimmst eine beliebige Anzahl an bleibenden Karten und/oder Spielern, auf denen Marken liegen, und gibst ihnen dann eine weitere Marke einer Sorte, die dort bereits liegt.)

Broche de contagio

Cuando el Broche de contagio entre al campo de batalla, pon un contador -1/-1 sobre la criatura objetivo.
{4}, {T}: Prolifera. (Eliges cualquier número de permanentes y/o jugadores con contadores sobre ellos y pones sobre cada uno un contador de un tipo que ya tenga.)

Boucle de contagion

Quand la Boucle de contagion arrive sur le champ de bataille, mettez un marqueur -1/-1 sur la créature ciblée.
{4}, {T} : Proliférez. (Vous choisissez n'importe quel nombre de permanents et/ou de joueurs avec des marqueurs sur eux, puis vous leur donnez à chacun un autre marqueur d'une sorte déjà présente.)

Stretta Contagiosa

Quando la Stretta Contagiosa entra nel campo di battaglia, metti un segnalino -1/-1 su una creatura bersaglio.
{4}, {T}: Proliferare. (Scegli un qualsiasi numero di permanenti e/o giocatori con segnalini su di essi, poi metti su ognuno un altro segnalino di un tipo già presente.)

伝染病の留め金

伝染病の留め金が戦場に出たとき、クリーチャー１体を対象とし、それの上に－１/－１カウンターを１個置く。
{4}, {T}：増殖を行う。 （あなたはカウンターの置かれているパーマネントやプレイヤーを望む数だけ選び、その後それぞれに、その上にすでに置かれているカウンターのうち１種類を１個置く。）

Contagion Clasp

When Contagion Clasp enters, put a -1/-1 counter on target creature.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Fallout

When Contagion Clasp enters the battlefield, put a -1/-1 counter on target creature.
{4}, {T}: Proliferate. (Choose any number of permanents and/or players, then give each another counter of each kind already there.)

Phyrexia: All Will Be One Commander

Time Spiral Remastered

The List

Contagion Clasp's first ability is mandatory. If you're the only player who controls a creature, you must target one of them.

An ability that triggers "Whenever you proliferate" triggers even if you chose no permanents or players while doing so.

If a permanent ever has both +1/+1 counters and -1/-1 counters on it at the same time, they're removed in pairs as a state-based action so that the permanent has only one of those kinds of counters on it.

If a player or permanent has more than one kind of counter on it, and you choose for it to get additional counters, it must get one of each kind of counter it already has. You can't have it get just one kind of counter it already has and not the others.

Players can respond to a spell or ability whose effect includes proliferating. Once that spell or ability starts to resolve, however, and its controller chooses which permanents and players will get new counters, it's too late for anyone to respond.

To proliferate, you can choose any permanent that has a counter, including ones controlled by opponents. You can choose any player who has a counter, including opponents. You can't choose cards in any zone other than the battlefield, even if they have counters on them.

You don't have to choose every permanent or player that has a counter, only the ones you want to add another counter to. Since "any number" includes zero, you don't have to choose any permanents at all, and you don't have to choose any players at all.