Sirenen-Späher

Fliegend
Wenn der Sirenen-Späher ins Spiel kommt, erkundet er. (Decke die oberste Karte deiner Bibliothek auf. Falls die Karte ein Land ist, nimm sie auf deine Hand. Lege sonst eine +1/+1-Marke auf diese Kreatur und lege dann die Karte zurück oder auf deinen Friedhof.)

Sirena vigilante

Vuela.
Cuando la Sirena vigilante entre al campo de batalla, explora. (Muestra la primera carta de tu biblioteca. Pon esa carta en tu mano si es una tierra. De lo contrario, pon un contador +1/+1 sobre esta criatura y luego devuelve la carta a su sitio o ponla en tu cementerio.)

Sirène vigie

Vol
Quand la Sirène vigie arrive sur le champ de bataille, elle explore. (Révélez la carte du dessus de votre bibliothèque. Mettez cette carte dans votre main si c'est un terrain. Sinon, mettez un marqueur +1/+1 sur cette créature, puis remettez la carte au-dessus de votre bibliothèque ou mettez-la dans votre cimetière.)

Sirenide Vedetta

Volare
Quando il Sirenide Vedetta entra nel campo di battaglia, esplora. (Rivela la prima carta del tuo grimorio. Se è una terra, aggiungila alla tua mano. Altrimenti, metti un segnalino +1/+1 su questa creatura, poi rimetti quella carta al suo posto o mettila nel tuo cimitero.)

セイレーンの見張り番

飛行
セイレーンの見張り番が戦場に出たとき、これは探検を行う。（あなたのライブラリーの一番上のカードを公開する。それが土地であるなら、そのカードをあなたの手札に加える。そうでないなら、このクリーチャーの上に＋１/＋１カウンターを１個置き、その後、そのカードを戻すかあなたの墓地に置く。）

세이렌 파수꾼

비행
세이렌 파수꾼이 전장에 들어올 때, 세이렌 파수꾼은 탐험을 한다. (당신의 서고 맨 위의 카드를 공개한다. 그 카드가 대지라면 그 카드를 당신의 손으로 가져간다. 그렇지 않으면, 이 생물에 +1/+1 카운터 한 개를 올려놓은 후, 그 카드를 서고에 다시 올려놓거나 당신의 무덤에 넣는다.)

Vigia Sireno

Voar
Quando Vigia Sireno entra no campo de batalha, ele explora. (Revele o card do topo de seu grimório. Coloque aquele card em sua mão se ele for um terreno. Caso contrário, coloque um marcador +1/+1 nesta criatura e, em seguida, devolva o card ao grimório ou coloque-o em seu cemitério.)

Ревун-Дозорный

Полет
Когда Ревун-Дозорный выходит на поле битвы, он использует Разведку. (Покажите верхнюю карту вашей библиотеки. Если та карта является землей, положите ее в вашу руку. В противном случае положите на это существо один жетон +1/+1, затем положите ту карту назад или положите ее на ваше кладбище.)

塞连警戒员

飞行
当塞连警戒员进战场时，令它勘察。（展示你的牌库顶牌。如果该牌是地，则置于你手上。若否，则在此生物上放置一个+1/+1指示物，然后将所展示的牌放回原位或置入你的坟墓场。）

塞連警戒員

飛行
當塞連警戒員進戰場時，令它勘察。（展示你的牌庫頂牌。如果該牌是地，則置於你手上。若否，則在此生物上放置一個+1/+1指示物，然後將所展示的牌放回原位或置入你的墳墓場。）

Siren Lookout

Flying
When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

Ixalan

Flying
When Siren Lookout enters the battlefield, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores. If you reveal a nonland card this way, you won't put a +1/+1 counter on anything, but you may put the revealed card into your graveyard. Effects that trigger "whenever a creature explores" trigger as appropriate.

If a resolving spell or ability instructs a specific creature to explore but that creature has left the battlefield, the creature still explores. If you reveal a nonland card this way, you won't put a +1/+1 counter on anything, but you may put the revealed card into your graveyard. Effects that trigger "whenever a creature you control explores" trigger if appropriate.

If an ability instructs a creature to explore, its controller reveals the top card of their library. If it's a land card, they'll put it into their hand. Otherwise, they'll put a +1/+1 counter on that creature, then choose to either leave that card on top of their library or put it into their graveyard.

If no card is revealed, most likely because that player's library is empty, the exploring creature receives a +1/+1 counter.

In some unusual cases, noncreature permanents may explore. For example, if the creature card returned by Defossilize is somehow not a creature once it's on the battlefield, it can still explore. You'll take all the same actions, and you may end up putting a +1/+1 counter on the permanent. (Note that some effects target a creature, and those effects would still require a legal target to have it explore.)

Once an ability that causes a creature to explore begins to resolve, no player may take any other actions until it's done. Notably, opponents can't try to remove the exploring creature after you reveal a nonland card but before it receives a counter.

Some spells or abilities might cause a creature to explore multiple times in a row. If you reveal a nonland card when a creature explores and leave it on top of your library, then the creature explores again immediately afterwards, you'll reveal the same card again.