[BRO] fix Slagstone Refinery trigger (#9761)

* fix Slagstone Refinery trigger

fixes #9755 by rewritting the checkTrigger method.

* apply changes from review

* minor fix, remove unecessary import

Mage.Sets/src/mage/cards/s/SlagstoneRefinery.java

@@ -15,7 +15,7 @@ import mage.game.permanent.token.PowerstoneToken;
 import java.util.UUID;
 
 /**
- * @author TheElk801
+ * @author TheElk801, Susucre
  */
 public final class SlagstoneRefinery extends CardImpl {
 
@@ -59,10 +59,19 @@ class SlagstoneRefineryTriggeredAbility extends TriggeredAbilityImpl {
     @Override
     public boolean checkTrigger(GameEvent event, Game game) {
         ZoneChangeEvent zEvent = (ZoneChangeEvent) event;
-        return zEvent.getFromZone().match(Zone.BATTLEFIELD)
+
-                && (zEvent.getToZone().match(Zone.GRAVEYARD) || zEvent.getToZone().match(Zone.EXILED))
+        // Filters ZC events for only battlefield => graveyard or battlefield => exile.
-                && zEvent.getTargetId().equals(getSourceId())
+        if (zEvent.getFromZone() == Zone.BATTLEFIELD && (zEvent.getToZone() == Zone.GRAVEYARD || zEvent.getToZone() == Zone.EXILED)) {
-                || (zEvent.getTarget().isArtifact(game) && !(zEvent.getTarget() instanceof PermanentToken));
+            if(zEvent.getTargetId().equals(getSourceId())) {                             // {this}
+                return true;
+            } else {                                                                     // another
+                return zEvent.getTarget().isArtifact(game)                               // artifact
+                    && !(zEvent.getTarget() instanceof PermanentToken)                   // nontoken
+                    && (zEvent.getTarget().getControllerId().equals(getControllerId())); // you control
+            }
+        }
+
+        return false;
     }
 
     @Override