[TDM] Focus the Mind and Sage of the Skies (#13524)

* [TDM] Implement Focus the Mind
* [TDM] Implement Sage of the Skies
* Extracted cast another spell this turn condition from Rally the Monastery
* Add condition to Rally the Monastery and Slick Sequence

Mage/src/main/java/mage/abilities/condition/common/CastAnotherSpellThisTurnCondition.java

@@ -0,0 +1,44 @@
+package mage.abilities.condition.common;
+
+import mage.abilities.Ability;
+import mage.abilities.condition.Condition;
+import mage.abilities.hint.ConditionHint;
+import mage.abilities.hint.Hint;
+import mage.game.Game;
+import mage.game.stack.Spell;
+import mage.watchers.common.SpellsCastWatcher;
+
+import java.util.List;
+import java.util.Objects;
+
+/**
+ * @author balazskristof, Jmlundeen
+ */
+public enum CastAnotherSpellThisTurnCondition implements Condition {
+    instance;
+    private final Hint hint = new ConditionHint(
+            this, "You've cast another spell this turn"
+    );
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        SpellsCastWatcher watcher = game.getState().getWatcher(SpellsCastWatcher.class);
+        if (watcher == null) {
+            return false;
+        }
+        List<Spell> spells = watcher.getSpellsCastThisTurn(source.getControllerId());
+        return spells != null && spells
+                .stream()
+                .filter(Objects::nonNull)
+                .anyMatch(spell -> !spell.getSourceId().equals(source.getSourceId()) || spell.getZoneChangeCounter(game) != source.getSourceObjectZoneChangeCounter());
+    }
+
+    public Hint getHint() {
+        return hint;
+    }
+
+    @Override
+    public String toString() {
+        return "you've cast another spell this turn";
+    }
+}