Wegefinderin der Flussherolde

Wachsamkeit
Wenn die Wegefinderin der Flussherolde ins Spiel kommt, erkundet sie. (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.)

Guía de los Heraldos del Río

Vigilancia.
Cuando la Guía de los Heraldos del Río 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.)

Guide des Hérauts de l'onde

Vigilance
Quand la Guide des Hérauts de l'onde 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.)

Guida Araldo del Fiume

Cautela
Quando la Guida Araldo del Fiume 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.)

川守りの案内人

警戒
川守りの案内人が戦場に出たとき、これは探検を行う。（あなたのライブラリーの一番上にあるカード１枚を公開する。それが土地なら、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１個を置く。その後、そのカードを戻すかあなたの墓地に置く。）

Guia dos Arautos do Rio

Vigilância
Quando Guia dos Arautos do Rio entra no campo de batalha, ela 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.)

川流使向导

警戒
当川流使向导进战场时，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。）

River Herald Guide

Vigilance
When River Herald Guide 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.)

The Lost Caverns of Ixalan

Vigilance
When River Herald Guide 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 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.