Tbh u killed him, hes no more than a dashing Minion.
After u FINALLY worked on his REAL problem, the too strong engage, which only took you a year, could u possibly give him some basestats back?
I mean I played him a couple hundred games, I mained him, but its Impossible to play him, if a caster minion got more tankyness than him.
Just revert his dmg buffs and give him some tank stats back. Hes not supposed to deal dmg.