AP Vel'Koz, he is also playable in jungle and supp Few days ago, I played ranked, and enemy Vel Koz had like 20/3, and he was supp.. So yeah, AP
AP MID Build: Rabadon's Deathcap,Void Staff,Sorcrer's Shoes,Athene's Unholy Grail,Liandry's Torment & Deathfire Grasp i use this build try it very OP
He is OP for now he can kill everything in his way but when he get nerfed without escape skills he will be garbage type of champ so i would not recommend you to buy him .
He have good dmg on spells but , they can be dodged easy - an ulty deal good dmg but one CC and over , DEAD