I’ve definitely abused disappearus in dueling class a lot, but honestly it’s a very cheap strategy and shouldn’t be allowed. If animorphus is banned it makes sense to ban it too in my opinion. Or at least in hunger games mode.
It's only "frustrating" in dueling class, a debuff isn't warranted.Animorphi are banned from dueling classes and challenges because then they would give that player an advantage over other players who haven't purchased it, thus violating the EULA. I personally don't believe that any strategy should be outright banned and instead should be debuffed to reduce its effectiveness if it is really that frustrating to play against.