New Void-themed Champion

Hey all,

I was thinking there should be a new champion from the Void, one designed specifically to fit into the Support role. Sure, Vel'koz could be a support, but he was designed for mid, I believe. I don't have a name, so feel free to respond with ideas, but here's the kit that could be used. Also, the debut of this champ could be alongside my proposed game mode idea (see link) for just Void champions.

So although I don't have a name for the champ, I do have a title in mind: The Link between Dimensions. This champion's lore would revolve around being able to travel in and out of the Void at will. Placeholder name will be "Zen'Wrath." All numbers subject to change/discussion.

Passive: Stuck in the Middle Zen'Wrath does not exist entirely in this world, causing a portion of the attacks he suffers to fall into the Void. Zen gains 5/10/15/20% damage reduction at levels 1/6/11/16.

Q: Don't Go Zen creates a portal beneath the enemy's feet after a delay. If an enemy is caught, chains are summoned, dealing magic damage and rooting the target for 1.5 seconds. (The portal would be pretty small, like a Syndra Q.)

W: The Void's Protection Zen targets himself or an ally. The target is briefly transported into the void, becoming Suppressed and Untargetable for .5 seconds. (The idea is for this to be kind of like Tahm's ability, but the target remains in place. It is also a more reactionary skill since the window is so short.)

E: Interdimensional Strength Upon activation, Zen can move through units and gains increased movespeed for 5 seconds. During this time, his auto attacks deal a percentage of his maximum health as magic damage. (Open to suggestions on this one, figured he could use some damage, but ultimately unsure of what a 3rd spell would be.)

R: Enter the Void Summons a massive Black Hole behind a target location that attempts to suck enemies into the Void for 5 seconds. All champions gain 50/75/100% increased movement speed toward the Void. Additionally, enemies attempting to flee (in the opposite direction) are slowed by the same amount. Enemies rooted or stunned near the Void are free from its effects for the duration (that 100% speed reduction at max rank would count as a root for 2 seconds). Enemy champions still within the Void's reach by the end of the 5 seconds will suffer 10% max hp as true damage, while allied champions will heal for the same amount. Zen is both suppressed and cc-immune during the 5 seconds, making this skill an uninterruptable channel ability. He can still take damage, however, the portal will last the full 5 seconds even if he dies.

What do you all think? I really like the thematic and the Ult, and I tried to balance it out as well as I could, but perhaps it's still too much?