Mobility (at least pre divekick nerf), good damage, a 19% low hitting full screen MB projectile, deceptive crossup, a fast projectile that converts into full combo at midscreen or possibly further, trap setups that let you loop damage, great AA's/ air to airs that can convert to full combos, and a top 5 in the game trait.
Mobility good jump arc best back dash good dash high damage 61% no meter a glitched trait great whiff punish full screen whiff punish. Good chip damage from his mb lightning cross up vortex was recently discovered too.
Build a man a fire and he's warm for hours. Light a man on fire and he's warm for the rest of his life