Actually, a really hard delay on both tatami and cicada would probably do the trick, seriously a buttload of delay on this just to not make it spammable. as of this moment, both escape skills are spammable with 3 kiels which makes them OP as with those two, they are the only class that can default GTB shield. and make cicada only push back 1-3 cells so that melee classes can reach the ninja easily.
And a class that forces you to change classes so you can fight it is typically the description of an OP class.