[LCI] Implement Intrepid Paleontologist (#11508)

* Improve some "mana spent -> give effect to permanent spell" cards
make effect source be the SpellAbility itself

* Implement Intrepid Paleontologist and tests

* Use a common class for the "specific MOR ETBs with counter" effect

* Prevent casting non-owned dinosuars

* Rename AddCounterEnteringMOR to AddCounterEnteringCreature

* fixes from review

Mage/src/main/java/mage/MageIdentifier.java

@@ -24,6 +24,7 @@ public enum MageIdentifier {
     GisaAndGeralfWatcher,
     DanithaNewBenaliasLightWatcher,
     HaukensInsightWatcher,
+    IntrepidPaleontologistWatcher,
     KaradorGhostChieftainWatcher,
     KessDissidentMageWatcher,
     MuldrothaTheGravetideWatcher,

Mage/src/main/java/mage/abilities/effects/common/counter/AddCounterEnteringCreatureEffect.java

@@ -0,0 +1,70 @@
+package mage.abilities.effects.common.counter;
+
+import mage.MageObjectReference;
+import mage.abilities.Ability;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.counters.Counter;
+import mage.counters.CounterType;
+import mage.game.Game;
+import mage.game.events.EntersTheBattlefieldEvent;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+
+/**
+ * @author notgreat
+ */
+public class AddCounterEnteringCreatureEffect extends ReplacementEffectImpl {
+
+    private final MageObjectReference mor;
+    private final Counter counters;
+
+    public AddCounterEnteringCreatureEffect(MageObjectReference mor, Counter counters, Outcome outcome, String text) {
+        super(Duration.EndOfTurn, outcome);
+        this.staticText = "That creature enters the battlefield with " + text + " on it";
+        this.mor = mor;
+        this.counters = counters;
+    }
+    public AddCounterEnteringCreatureEffect(MageObjectReference mor, Counter counters, Outcome outcome){
+        this(mor, counters, outcome, counters.getDescription());
+    }
+
+    /**
+     * defaults to a single +1/+1 counter
+     */
+    public AddCounterEnteringCreatureEffect(MageObjectReference mor){
+        this(mor, CounterType.P1P1.createInstance(), Outcome.BoostCreature, "an additional +1/+1 counter");
+    }
+
+    private AddCounterEnteringCreatureEffect(final AddCounterEnteringCreatureEffect effect) {
+        super(effect);
+        this.mor = effect.mor;
+        this.counters = effect.counters;
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        Permanent permanent = ((EntersTheBattlefieldEvent) event).getTarget();
+        return permanent != null && mor.refersTo(permanent, game);
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        Permanent target = ((EntersTheBattlefieldEvent) event).getTarget();
+        if (target != null) {
+            target.addCounters(counters, source.getControllerId(), source, game, event.getAppliedEffects());
+        }
+        return false;
+    }
+
+    @Override
+    public AddCounterEnteringCreatureEffect copy() {
+        return new AddCounterEnteringCreatureEffect(this);
+    }
+}