[Gameplay] Urgot's W Purge doesn't activate Phase Rush, ever.

Urgot can't activate Phase Rush without using his Q, E and ultimate - his W Purge and passive Echoing Flames do not count towards activating the keystone, no matter how many times you attack with them in short succession. This despite the keystone claiming it requires either three basic attacks (Urgot's W Purge fires 12 in one cast) or three separate spell hits (Urgot's passive Echoing Flames is for some reason not counted as a spell in this one situation despite activating spell effects such as Arcane comet, Manaflow band and spell vamp.)