diff --git a/Mage.Sets/src/mage/cards/b/BenthicExplorers.java b/Mage.Sets/src/mage/cards/b/BenthicExplorers.java
index 9e9ad15128..dd8c20015c 100644
--- a/Mage.Sets/src/mage/cards/b/BenthicExplorers.java
+++ b/Mage.Sets/src/mage/cards/b/BenthicExplorers.java
@@ -21,6 +21,7 @@ import mage.game.permanent.Permanent;
 import mage.players.Player;
 import mage.target.common.TargetLandPermanent;
 import mage.util.CardUtil;
+
 import java.util.ArrayList;
 import java.util.List;
 import java.util.UUID;
@@ -45,13 +46,12 @@ public final class BenthicExplorers extends CardImpl {
         this.power = new MageInt(2);
         this.toughness = new MageInt(4);
 
-        // {tap}, Untap a tapped land an opponent controls: Add one mana of any type that land could produce.
+        // {T}, Untap a tapped land an opponent controls: Add one mana of any type that land could produce.
         Ability ability = new BenthicExplorersManaAbility();
-        TargetLandPermanent targetOpponentLand = new TargetLandPermanent(filter);
-        targetOpponentLand.setNotTarget(true);  // not a target, it is chosen
-        ability.addCost(new BenthicExplorersCost(targetOpponentLand));
+        ability.addCost(new BenthicExplorersCost(
+                new TargetLandPermanent(1, 1, filter, true)
+        ));
         this.addAbility(ability);
-
     }
 
     private BenthicExplorers(final BenthicExplorers card) {
@@ -136,7 +136,20 @@ class BenthicExplorersManaEffect extends ManaEffect {
     @Override
     public List<Mana> getNetMana(Game game, Ability source) {
         List<Mana> netManas = new ArrayList<>();
-        Mana types = getManaTypes(game, source);
+
+        Mana types = new Mana();
+        for (UUID opponentId : game.getOpponents(source.getControllerId())) {
+            for (Permanent permanent : game.getBattlefield().getAllActivePermanents(opponentId)) {
+                if (permanent.isLand() && permanent.isTapped()) {
+                    for (ActivatedManaAbilityImpl ability : permanent.getAbilities(game).getActivatedManaAbilities(Zone.BATTLEFIELD)) {
+                        for (Mana mana : ability.getNetMana(game)) {
+                            types.add(mana);
+                        }
+                    }
+                }
+            }
+        }
+
         if (types.getBlack() > 0) {
             netManas.add(new Mana(ColoredManaSymbol.B));
         }
diff --git a/Mage.Sets/src/mage/cards/r/RishadanPort.java b/Mage.Sets/src/mage/cards/r/RishadanPort.java
index 45fe3d81e0..3cb6c5a151 100644
--- a/Mage.Sets/src/mage/cards/r/RishadanPort.java
+++ b/Mage.Sets/src/mage/cards/r/RishadanPort.java
@@ -1,7 +1,5 @@
-
 package mage.cards.r;
 
-import java.util.UUID;
 import mage.abilities.Ability;
 import mage.abilities.common.SimpleActivatedAbility;
 import mage.abilities.costs.common.TapSourceCost;
@@ -14,18 +12,19 @@ import mage.constants.CardType;
 import mage.constants.Zone;
 import mage.target.common.TargetLandPermanent;
 
+import java.util.UUID;
+
 /**
- *
  * @author jonubuu
  */
 public final class RishadanPort extends CardImpl {
 
     public RishadanPort(UUID ownerId, CardSetInfo setInfo) {
-        super(ownerId,setInfo,new CardType[]{CardType.LAND},null);
+        super(ownerId, setInfo, new CardType[]{CardType.LAND}, null);
 
-        // {tap}: Add {C}.
+        // {T}: Add {C}.
         this.addAbility(new ColorlessManaAbility());
-        // {1}, {tap}: Tap target land.
+        // {1}, {T}: Tap target land.
         Ability ability = new SimpleActivatedAbility(Zone.BATTLEFIELD, new TapTargetEffect(), new GenericManaCost(1));
         ability.addCost(new TapSourceCost());
         ability.addTarget(new TargetLandPermanent());
diff --git a/Mage.Tests/src/test/java/org/mage/test/cards/cost/modification/CostReduceForEachTest.java b/Mage.Tests/src/test/java/org/mage/test/cards/cost/modification/CostReduceForEachTest.java
index e8eab146be..ef5ad19477 100644
--- a/Mage.Tests/src/test/java/org/mage/test/cards/cost/modification/CostReduceForEachTest.java
+++ b/Mage.Tests/src/test/java/org/mage/test/cards/cost/modification/CostReduceForEachTest.java
@@ -182,4 +182,35 @@ public class CostReduceForEachTest extends CardTestPlayerBaseWithAIHelps {
 
         assertGraveyardCount(playerA, "Shower of Coals", 1);
     }
+
+    @Test
+    public void test_BenthicExplorers_ManaAbilityFromOpponentCard() {
+        // {T}, Untap a tapped land an opponent controls: Add one mana of any type that land could produce.
+        addCard(Zone.BATTLEFIELD, playerA, "Benthic Explorers", 1);
+        //
+        addCard(Zone.HAND, playerA, "Balduvian Bears", 1); // {1}{G}
+        addCard(Zone.BATTLEFIELD, playerA, "Swamp", 1);
+        addCard(Zone.BATTLEFIELD, playerB, "Forest", 1); // give 1 mana
+        //
+        // {1}, {T}: Tap target land.
+        addCard(Zone.BATTLEFIELD, playerA, "Rishadan Port", 1);
+        addCard(Zone.BATTLEFIELD, playerA, "Swamp", 1);
+
+        // prepare tapped land
+        activateAbility(1, PhaseStep.PRECOMBAT_MAIN, playerA, "{1}, {T}: Tap target land", "Forest");
+        waitStackResolved(1, PhaseStep.PRECOMBAT_MAIN);
+        checkPermanentTapped("must be tapped", 1, PhaseStep.PRECOMBAT_MAIN, playerA, playerB, "Forest", true, 1);
+
+        // cast with opponent's mana
+        checkPlayableAbility("must play", 1, PhaseStep.PRECOMBAT_MAIN, playerA, "Cast Balduvian Bears", true);
+        castSpell(1, PhaseStep.PRECOMBAT_MAIN, playerA, "Balduvian Bears");
+        setChoice(playerA, "Forest"); // mana from tapped
+
+        setStrictChooseMode(true);
+        setStopAt(1, PhaseStep.END_TURN);
+        execute();
+        assertAllCommandsUsed();
+
+        assertPermanentCount(playerA, "Balduvian Bears", 1);
+    }
 }