[STX] Fix Mage Duel cost reduction. Closes
@@ -75,8 +75,7 @@ enum MageDuelCondition implements Condition {
.stream()
.filter(Objects::nonNull)
.filter(spell -> spell.isInstantOrSorcery(game))
- .map(Spell::getSourceId)
- .anyMatch(source.getSourceId()::equals);
+ .anyMatch(spell -> !spell.getSourceId().equals(source.getSourceId()));
}
@Override
