User blog comment:DoctorAsawa/Tybalt, The Shard of Corruption/@comment-5860572-20130115065432/@comment-5514182-20130115132037

fixed

He wasn't meant to proc the debuff himself, like how soraka can't give herself mana, but in a 1v1 fight, he benefits from the 50% armor shred the entire time.

I got the radius of his E wrong, it's supposed to be a CC that people would avoid, so it's cast range should keep getting longer each level.