Title says it all. Get rid of the invis and armor on Phantom, and give him a blink skill similar to that in Dishonored. It could still be used to flank by blinking from cover to cover across LOSs quickly, and would still give him away to close to melee range, without the ridiculousness of one shotting from invisibility. As far as it being too easy to approach with, once people learn its range, it would be easy for all classes to stay outside of it, unless the Phantom player has played well and positioned themselves for a good blink + stabbity stab.
Nosgoth has a similar skill (Shadow Step), and it isn’t OP.
