His passive alone is pretty busted. Like a built in nashor's tooth (bonus damage every hit based on AP, but a higher % than nashors), plus if he lands 3 hits he gets an amumu aura (damage based on % max health of enemy, plus base damage) and speed boost. Once he gets rylai's, any melee without hard escape options can't touch him or they are guaranteed death. Then because of his passive penetration from his E, you can't even try just building tanky enough to survive. If you go straight damage, he will outlast you from his shields while his Q two shots you. As an ornn that rushed MR and health early game against him, his Q was still taking off 1/3rd of my max health. Even after darius's unnecessary buffs, mord is my permaban until they balance him