Update PeekAndRevealAi.java

forge-ai/src/main/java/forge/ai/ability/PeekAndRevealAi.java

@@ -1,7 +1,9 @@
 package forge.ai.ability;
 
+import forge.ai.AiAttackController;
 import forge.ai.SpellAbilityAi;
 import forge.ai.SpellApiToAi;
+import forge.game.card.Card;
 import forge.game.phase.PhaseHandler;
 import forge.game.phase.PhaseType;
 import forge.game.player.Player;
@@ -9,6 +11,7 @@ import forge.game.player.PlayerActionConfirmMode;
 import forge.game.spellability.AbilityStatic;
 import forge.game.spellability.AbilitySub;
 import forge.game.spellability.SpellAbility;
+import forge.game.zone.ZoneType;
 
 /** 
  * TODO: Write javadoc for this type.
@@ -38,6 +41,28 @@ public class PeekAndRevealAi extends SpellAbilityAi {
         }
         // So far this only appears on Triggers, but will expand
         // once things get converted from Dig + NoMove
+        Player opp = AiAttackController.choosePreferredDefenderPlayer(aiPlayer);
+        final Card host = sa.getHostCard();
+        Player libraryOwner = aiPlayer;
+
+        if (!willPayCosts(aiPlayer, sa, sa.getPayCosts(), host)) {
+            return false;
+        }
+
+        if (sa.usesTargeting()) {
+            sa.resetTargets();
+            //todo: evaluate valid targets
+            if (!sa.canTarget(opp)) {
+                return false;
+            }
+            sa.getTargets().add(opp);
+            libraryOwner = opp;
+        }
+
+        if (libraryOwner.getCardsIn(ZoneType.Library).isEmpty()) {
+            return false;
+        }
+
         return true;
     }