Rasknitt was down to 3-5% health when I used my shade ult to heavy stab him in the face with the elf 2h sword. I’m not sure how much damage this does, but evidently it was a LOT because he instantly went into the float-and-splode animation.
There may be something janky going on because in a previous game a similar thing happened. Instead of dying instantly both the teleport and death animations didn’t play at all, he just disappeared.