if (!effect.getEffectType().equals(EffectType.BENEFICIAL)) {
              event.setResult(Event.Result.DENY);
          }

So the Magical Herbs trinket doesnt just remove negative effects, but also effects with EffectType.NEUTRAL.

As a suggestion, maybe a config or something to make it ignore Neutral ones as well? I ask because I'm the Mahou Tsukai dev and occasionally get some reports that it removes effects from Mahou which are all set to neutral. I understand if you'd want to leave the default to keep beneficial only though