Merge branch 'master' into 'master'

DigAi: override chkAIDrawback, fixes e.g. Oona, Queen of the Fae activation

See merge request core-developers/forge!5829

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

@@ -121,6 +121,12 @@ public class DigAi extends SpellAbilityAi {
         return !ComputerUtil.preventRunAwayActivations(sa);
     }
 
+    @Override
+    public boolean chkAIDrawback(SpellAbility sa, Player aiPlayer) {
+        // TODO: improve this check in ways that may be specific to a subability
+        return canPlayAI(aiPlayer, sa);
+    }
+
     @Override
     protected boolean doTriggerAINoCost(Player ai, SpellAbility sa, boolean mandatory) {
         final SpellAbility root = sa.getRootAbility();