Just add knockback and draw-in immunity to purify during fl, have it match old fetter ward.

Prepop if you see a drk running at you and they'll be forced to either wait for resilience to drop off, or disengage. The potential also then exists for drks baiting early purifies by running in and out, evening shit up somewhat and not making it a total shutdown of their engagement potential.

Bonus is that it'll fuck with blota as well, and soft nerf mnk's ability to dive backliners by preventing the application of pressure point.