There's Nothing Heroic About Heroic Entrance
People literally don't even stick around for your ult anymore, since it no longer grants damage reduction, so if you stand inside the landing zone while in a losing battle, you're effectively a moron for waiting.
It's like if Shen's ult didn't give you a shield, and the Shen player was just screaming at you to wait for him and stick around, because in three seconds he'll be there to save you anyway.
Also, taunt is kind of an underwhelming ability, and old E isn't as satisfying as the original one was. Current E is a dash that can't go through fucking walls, despite having to back that ass up into the enemy and possibly screw your own escape attempt, even if it comes with a knock-up, the fact that you can do that, in addition to clipping the side of terrain feels pretty bad.
There's a bunch of shit wrong with this champion, and it seems like you've managed to thoroughly screw this anti-mage tank, just like you screwed Swain from being an anti-assassin drain-tank-mage into being a mage who is only good at catching champions with his E mid-spellcast, and couldn't ever hope to land it on a skilled Zed, Fizz, LeBlanc, ANYTHING with mobility, and god-for-fucking-bid Katarina.
There's a reason Swain goes top and bot more than mid, and why current Galio literally has to build nearly full tank half the time to be useful, or just get blown the fuck up, instead of just being able to incentivize magic resist and be useful due to it. Why don't you revert Abyssal Mask back into Abyssal Scepter, so it can actually be a fun item to build, instead of being a disgustingly expensive tank item with a recipe cost 400+g more than Rod of Ages which builds out of components that cost roughly the same amount of gold.
Rant over