TK Ult QoL Change: Audio/Visual Indicator for Nearby Teamates

I have played quite a bit of Tahm Kench and I know his solo play play could be improved if nearby teamates received a very distinctive audio or visual effect when they are near TK when he is channeling his ult.

There have been so many times my team missed the chance at a great TK ult because they are looking elsewhere on the map and half the time they don't pay attention to my flurry of pings. I think this would simple yet great change for the solo TK players and their teams.

That is all.