Düsterwasser

Das Düsterwasser kommt getappt ins Spiel.
{T}, opfere das Düsterwasser: Durchsuche deine Bibliothek nach einer Insel- oder Sumpf-Karte, bringe sie ins Spiel und mische danach.

Río malsano

El Río malsano entra al campo de batalla girado.
{T}, sacrificar el Río malsano: Busca en tu biblioteca una carta de Isla o Pantano, ponla en el campo de batalla y luego baraja.

Rivière souillée

La Rivière souillée arrive sur le champ de bataille engagée.
{T}, sacrifiez la Rivière souillée : Cherchez dans votre bibliothèque une carte d'île ou de marais, mettez-la sur le champ de bataille, puis mélangez.

Fiume Acquitrinoso

Il Fiume Acquitrinoso entra nel campo di battaglia TAPpato.
{T}, Sacrifica il Fiume Acquitrinoso: Passa in rassegna il tuo grimorio per una carta Isola o Palude, mettila sul campo di battaglia, poi rimescola.

湿原の大河

湿原の大河はタップ状態で戦場に出る。
{T}, 湿原の大河を生け贄に捧げる：あなたのライブラリーから島や沼であるカード１枚を探し、戦場に出す。その後、ライブラリーを切り直す。

Rio Contaminado

Rio Contaminado entra no campo de batalha virado.
{T}, sacrifique Rio Contaminado: Procure em seu grimório um card de Ilha ou Pântano, coloque-o no campo de batalha e depois embaralhe.

腐败河流

腐败河流须横置进战场。
{T}，牺牲腐败河流：从你牌库中搜寻一张海岛或沼泽牌，将之放进战场，然后洗牌。

Bad River

Bad River enters tapped.
{T}, Sacrifice Bad River: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

Dominaria United Commander

Bad River enters the battlefield tapped.
{T}, Sacrifice Bad River: Search your library for an Island or Swamp card, put it onto the battlefield, then shuffle.

Vintage Masters

Bad River enters the battlefield tapped.
{T}, Sacrifice Bad River: Search your library for an Island or Swamp card and put it onto the battlefield. Then shuffle your library.

Mirage

Bad River comes into play tapped.
oc
T, Sacrifice Bad River: Search your library for an island or swamp card. Put that land into play. Shuffle your library afterwards.

Because the “search” requires you to find a card with certain characteristics, you don't have to find the card if you don't want to.