Support of play_land event for get playable cards.

Mage.Server.Plugins/Mage.Player.AI/src/main/java/mage/player/ai/ComputerPlayer.java

@@ -82,6 +82,7 @@ import java.util.*;
 import java.util.HashSet;
 import java.util.Map.Entry;
 import mage.abilities.costs.VariableCost;
+import mage.abilities.keyword.FlashAbility;
 import mage.cards.repository.ExpansionInfo;
 import mage.cards.repository.ExpansionRepository;
 
@@ -812,8 +813,15 @@ public class ComputerPlayer extends PlayerImpl implements Player {
 
     protected void playLand(Game game) {
         log.debug("playLand");
-        Set<Card> lands = hand.getCards(new FilterLandCard(), game);
+        Set<Card> lands = new LinkedHashSet<>();
-        while (lands.size() > 0 && this.landsPlayed < this.landsPerTurn) {
+        for (Card landCard:  hand.getCards(new FilterLandCard(), game)) {
+            // remove lands that can not be played
+            if (game.getContinuousEffects().preventedByRuleModification(GameEvent.getEvent(GameEvent.EventType.PLAY_LAND, landCard.getId(), landCard.getId(), playerId), game, true)) {
+                break;
+            }
+            lands.add(landCard);
+        }
+        while (lands.size() > 0 && this.canPlayLand()) {
             if (lands.size() == 1) {
                 this.playLand(lands.iterator().next(), game);
             }
@@ -875,8 +883,10 @@ public class ComputerPlayer extends PlayerImpl implements Player {
                 for (Mana avail: available) {
                     if (mana.enough(avail)) {
                         SpellAbility ability = card.getSpellAbility();
-                        if (ability != null && ability.canActivate(playerId, game)) {
+                        if (ability != null && ability.canActivate(playerId, game) && game.getContinuousEffects().
-                            if (card.getCardType().contains(CardType.INSTANT)) {
+                                preventedByRuleModification(GameEvent.getEvent(GameEvent.EventType.CAST_SPELL, ability.getSourceId(), ability.getSourceId(), playerId), game, true)) {
+                            if (card.getCardType().contains(CardType.INSTANT)
+                                    || card.hasAbility(FlashAbility.getInstance().getId(), game)) {
                                 playableInstant.add(card);
                             }
                             else {

Mage/src/mage/abilities/PlayLandAbility.java

@@ -32,6 +32,7 @@ import java.util.UUID;
 import mage.constants.AbilityType;
 import mage.constants.Zone;
 import mage.game.Game;
+import mage.game.events.GameEvent;
 
 /**
  *
@@ -55,10 +56,7 @@ public class PlayLandAbility extends ActivatedAbilityImpl {
             return false;
         }
         //20091005 - 114.2a
-        if (game.canPlaySorcery(playerId)) {
+        return game.canPlaySorcery(playerId) && game.getPlayer(playerId).canPlayLand();
-            return game.getPlayer(playerId).canPlayLand();
-        }
-        return false;
     }
 
     @Override

Mage/src/mage/players/PlayerImpl.java

@@ -774,12 +774,12 @@ public abstract class PlayerImpl implements Player, Serializable {
     @Override
     public boolean playLand(Card card, Game game) {
         //20091005 - 305.1
-        if (!game.replaceEvent(GameEvent.getEvent(GameEvent.EventType.PLAY_LAND, card.getId(), playerId))) {
+        if (!game.replaceEvent(GameEvent.getEvent(GameEvent.EventType.PLAY_LAND, card.getId(), card.getId(), playerId))) {
             // int bookmark = game.bookmarkState();
             Zone zone = game.getState().getZone(card.getId());
             if (card.putOntoBattlefield(game, zone, null, playerId)) {
                 landsPlayed++;
-                game.fireEvent(GameEvent.getEvent(GameEvent.EventType.LAND_PLAYED, card.getId(), playerId));
+                game.fireEvent(GameEvent.getEvent(GameEvent.EventType.LAND_PLAYED, card.getId(), card.getId(), playerId));
                 game.fireInformEvent(name + " plays " + card.getName());
                 // game.removeBookmark(bookmark);
                 resetStoredBookmark(game);
@@ -1900,6 +1900,11 @@ public abstract class PlayerImpl implements Player, Serializable {
             if (hidden) {
                 for (Card card : hand.getUniqueCards(game)) {
                     for (ActivatedAbility ability : card.getAbilities().getActivatedAbilities(Zone.HAND)) {
+                        if (ability instanceof PlayLandAbility) {
+                            if (game.getContinuousEffects().preventedByRuleModification(GameEvent.getEvent(GameEvent.EventType.PLAY_LAND, ability.getSourceId(), ability.getSourceId(), playerId), game, true)) {
+                                break;
+                            }
+                        }
                         if (canPlay(ability, available, game)) {
                             playable.add(ability);
                         }
@@ -1990,6 +1995,11 @@ public abstract class PlayerImpl implements Player, Serializable {
 
                 for (Card card : hand.getCards(game)) {
                     for (ActivatedAbility ability : card.getAbilities().getPlayableAbilities(Zone.HAND)) {
+                        if (ability instanceof PlayLandAbility) {
+                            if (game.getContinuousEffects().preventedByRuleModification(GameEvent.getEvent(GameEvent.EventType.PLAY_LAND, ability.getSourceId(), ability.getSourceId(), playerId), game, true)) {
+                                break;
+                            }
+                        }
                         if (canPlay(ability, available, game)) {
                             playable.add(card.getId());
                             break;