Keegan "Four Realms" attack

[Teth]

Im not sure what is happening, my character stops moving, cannot activate or use skills (e.g. dodge or mobility skills) and then takes 220000+ damage

I've tried to move around a bit before the attack stops character input but that seems at best to grant about 1 - 2 seconds of movement before said attack occurs

[Schnarchnase]

Sounds like the timer ran out.
Which is an unavoidable instant death.

[Teth]

oh okay well that may explain things, thanks for helping me to understand