ABILITY CONCEPT: Idea for a champion Ultimate ability which makes use of Wind Wall's mechanic

The ultimate is a 2 part ult.

First part of the ultimate would be a channeled windwall type of portal that keeps the caster in position (like Vel'Koz). The portal sucks up ALL minions, monsters (except Dragon and Baron), Teemos, Enemy Skillshot abilities that are facing the direction of the portal, powering up the size (or maybe the damage) of the second part of the ultimate. This windwall only blocks spells facing that direction so the user is still vulnerable from spells hitting from the side and behind.

The second part of the ultimate would be a giant slow moving ball that rolls towards the direction that the user casts it. The ball could be global, or gain bonus movement based on how far it travels. The ball won't knockup enemy champions (too many knockups) but it would deal damage and probably slow enemies hit. The second cast of the ult will have a time to use before the ult goes on cooldown (like Twisted Fate's teleport)

The portal could have affected champions to pull them to the portal (albeit slowly and never actually entering the portal) but considering the power of an ult of that nature, it would be OP. Also, the portal is not steerable.

Notes: Please comment and let me know if you like or don't like the idea.