"[Jarvan] creates a circle of impassable terrain"

But literally any form of dash can go through it, even if it can't go through normal walls. Yeah, that makes perfect sense. can't fucking FLY over wall, but can ROLL through 's "impassable" terrain. Also, unlike in the description, J4 can be CC'd during the leap. Knockups and formerly Ahri's charm can cancel it, put it on full cooldown, no wall or damage, and this is with J4 LIVING.

If you're going to literally put it in writing, at least mean it. Cataclysm's in game description should read "Jarvan leaps onto the target opponent, dealing a metric fuckton of damage equivalent to that of both bombs dropped on Japan during WW2. The terrain created by sheer slamming power is then seemingly impassable, however upon closer inspection one can see that it is, in fact, just Styrofoam, and easily passed." That is much more accurate.

Seriously, impassable should mean impassable. That's all I ask for. "Impassable" seems like it'd be stronger than normal walls, right? Nope, in fact, the "impassable" wall is weaker, and abilities, such as Kalista's passive, which cannot go through normal walls, can go through it. Makes perfect sense, amirite?