This makes me sad in the face :c

Is there anyone anymore that Jarvan can ult?

She can do this with Anivia's wall, too, and I'm pretty sure with Trundle's pillar. It's because they don't count as actual terrain (so Vayne/Poppy can't stun people against them, either), allowing movement abilities to get champions like Vayne/Riven through the terraformed terrain if they can travel the full distance of the terrain.

Personally, I'm more bothered by the fact that, sometimes, people can just walk right THROUGH Jarvan's ult/Anivia's wall.

Olaf, cause he doesn't run Flash

Yes, but... in that case, you're trapped in there with Olaf.

You can flash or EQ out of your arena if you'd like... But either way, trapping Olaf away from your ranged carries is one way to effectively peel off them when he cannot be disabled. As Jarvan I typically would prefer him hitting me rather than him doing his primary job of diving our carries.

Trapping Olaf then leaving might likely be even smarter, but in general, I do think Olaf is a prime Cataclysm target since it's basically the only way to stop an Olaf from reaching your carries.

Vayne rolls into a wall.
Comes out the otherside

YOU CAN'T EXPLAIN THAT!

fizz walks through it

How come kids love the taste of Cinnamon Toast Crunch?

its mainly fast targets. I think if u cast at max range and the target has over 500ms, you will miss