User blog comment:Willbachbakal/(Champion Rework) Veigar, the Tiny Master of Evil/@comment-24852115-20150301053159/@comment-24852115-20150301145635

As much fun it would be to watch Sion endlessly stampeding within the cage, I personally feel like unstoppable dashes should be able to go through it. I mean, if even superfast dashes like Bladesurge can't make it through Azir's wall, but Vi's (comparitively) slow ultimate can, then the same should probably be applied here for consistency's sake. Plus, it lands Malphite as a nice natural counter to this Veigar.

As for the homing dashes, though, I have no idea what to do with them. Either they go with your idea and just stop in midair after traveling far enough, they stop the dash upon hitting the wall, or they keep on teleporting until the cage falls. I think my solution would be to stun enemies who hit the walls, say, 5 times? If you're just walking around, that shouldn't be too hard to avoid the stun within your 2-3 seconds of imprisonment, but endless or poorly-aimed dashes would suddenly become a lot more dangerous to use.

My other concern is non-champion units, though it's a minor one. Say you set up the cage so the outside edge is touching one of Heimerdinger's turrets, and Tibbers is stuck inside the cage. I imagine this would behave normally, since it honestly doesn't make too much of a difference, but it can mess up champions like Zyra in niche situations.