Rac'Bor, the Portal Master

Lore: Deep within the bowels of the void, a being exists which controls the portals between the dimensions. Rac'Bor, the Portal Master, manipulates the space between the dimensions to connect them as he pleases. By his will, creatures like Kog'Maw, Khaz'ix, and Cho'Gath have escaped from the void to reek havoc on runeterra. However, seeing that such creatures were trapped within the summoner's rift, Rac'Bor presented himself to the summoners to get into the rift, where he intends to put many devious plans into fruition...

Appearance: Rac'Bor is about the size of an average human. Both of his palms and his feet are surrounded by a purple hue, and his eyes are simply purple all around as well. He holds three orbs in his palm, which he moves around whenever he casts an ability.

Abilities:

Passive: Dimensional Effects Rac'Bor's portals often lead to dimensions with odd environments. Depending on the weather/air of the environment, Rac'Bor's portals cause a random effect that go along with each ability (Slow from ice, Poison from air, Burn from fire)

Q: Portal Attachment Rac'Bor throws a portal out towards his enemy. If the portal hits, it attaches to the enemy (dealing magic damage). Due to the portal being attached to the enemy, it applies Rac'Bor's passive onto the opponent until the portal closes.

W: Black Hole Rac'Bor opens up a portal directly in front of him that moves as he wills (alt+click) The portal grows wider with leveling, and is able to suck up all enemy projectiles that it intercepts. If an enemy walks through the portal, or if Rac'Bor moves it over them, it will apply his passive.

E: Orb Selection (this ability does not apply his passive) Rac'Bor chooses one of his three orbs (the way that T.F chooses a card). Orb 1: Opens a portal of fire (applies burns, does the most magic damage) Orb 2: Opens a portal of poison (applies poison, and blinds enemies that stand over it) Orb 3: Opens a portal of ice (applies slows, if an enemy stands over the portal for over 2 seconds they are stunned and take magic damage) Rac'Bor opens a portal on the floor after choosing one of his three orbs, the portal is a bit large in range.

R: Dimensional Drit Rac'Bor opens up a portal that lasts for about 10 seconds. The first side of the portal appears where Rac'Bor stands when casting the ability, and the other end appears a distance away (distance to be decided). The portal works both ways, both enemies and allies may use it to transport to the other end. Note however that after using the portal you may not re-enter it for 2-3 seconds. This allows Rac'Bor to let allies come in to help him, or to make for some pretty good positional plays.

I don't have any numbers as far as damage goes, but I believe if he was made, he would have mana rather than any other type of energy, and his mana costs would be very high. His cool-downs would be moderate, the kind of cool-down levels that would make a mid laner invest in a moremellomonicon, rod of ages, etc.

This is just my idea that came to me, if anyone has any good ideas for health/damage/mana numbers or anything else, please post below!