User blog comment:Poisonshark/Custom Champion — Nicol Bolas, the Elder Dragon/@comment-7709681-20180402211605

Besides the overpowered kit, I think you're not taking Nicol Bolas as per character but rather his cards portrayal, because in the lore he killed the other Elder Dragons and lost his OP-ness along with the rest of the Planewalkers at the Merging, to not say that limiting him to just mind control and instakilling seems of weak effort from your part (I know these are carried from MtG, but could be better implemented).