Cantor dos Rios Ligeiros

Lampejo
Quando Cantor dos Rios Ligeiros entrar no campo de batalha, coloque um marcador de escudo em outra criatura alvo que você controla. (Se ela sofreria dano ou seria destruída, em vez disso, remova um marcador de escudo dela.)
Você pode conjurar mágicas de Tritão como se elas tivessem lampejo.

Strömungssänger

Aufblitzen
Wenn der Strömungssänger ins Spiel kommt, lege eine Schildmarke auf eine andere Kreatur deiner Wahl, die du kontrollierst. (Falls ihr Schaden zugefügt oder sie zerstört würde, entferne stattdessen eine Schildmarke von ihr.)
Du kannst Meervolk-Zaubersprüche wirken, als ob sie Aufblitzen hätten.

Cantante de ríos raudos

Destello.
Cuando el Cantante de ríos raudos entre al campo de batalla, pon un contador de escudo sobre otra criatura objetivo que controlas. (Si fuera a recibir daño o a ser destruida, en vez de eso, remueve un contador de escudo de ella.)
Puedes lanzar los hechizos de Tritón como si tuvieran la habilidad de destello.

Chanteur des rivières vives

Flash
Quand le Chanteur des rivières vives arrive sur le champ de bataille, mettez un marqueur « bouclier » sur une autre créature ciblée que vous contrôlez. (Si elle devait subir des blessures ou être détruite, retirez-lui un marqueur « bouclier » à la place.)
Vous pouvez lancer les sorts d'ondin comme s'ils avaient le flash.

Cantore dei Flutti Rapidi

Lampo
Quando il Cantore dei Flutti Rapidi entra nel campo di battaglia, metti un segnalino scudo su un'altra creatura bersaglio che controlli. (Se sta per subire danno o sta per essere distrutta, rimuovi invece un segnalino scudo da essa.)
Puoi lanciare le magie Tritone come se avessero lampo.

急流の歌い手

瞬速
急流の歌い手が戦場に出たとき、あなたがコントロールしていてこれでないクリーチャー１体を対象とする。それの上に盾カウンター１個を置く。（それがダメージを受けるか破壊されるなら、代わりにそれの上から盾カウンター１個を取り除く。）
あなたはマーフォーク・呪文を、それが瞬速を持っているかのように唱えてもよい。

Singer of Swift Rivers

Flash
When Singer of Swift Rivers enters, put a shield counter on another target creature you control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
You may cast Merfolk spells as though they had flash.

The Lost Caverns of Ixalan Commander

Flash
When Singer of Swift Rivers enters the battlefield, put a shield counter on another target creature you control.
You may cast Merfolk spells as though they had flash.

Flash
When Singer of Swift Rivers enters the battlefield, put a shield counter on another target creature you control. (If it would be dealt damage or destroyed, remove a shield counter from it instead.)
You may cast Merfolk spells as though they had flash.

"Shield" is not an ability that creatures have and shield counters are not keyword counters. If a creature with a shield counter loses its abilities, the shield counter will still protect it as normal.

A creature with a shield counter on it may still be destroyed by state-based actions if it has damage marked on it equal to its toughness or has been dealt unpreventable damage by a source with deathtouch.

If a permanent that would be dealt damage has more than one shield counter on it, that damage is prevented and only one shield counter is removed.

If a permanent with a shield counter is dealt unpreventable damage, that damage will be dealt and a shield counter will still be removed.

Removing a shield counter in this way isn't the same as regenerating a creature.

Shield counters don't prevent players from sacrificing creatures.