I have a kraken on my team.... fully traited.
You think it's being triggered by the Kraken's 3rd trait? I'm pretty sure I got the effect when my guy attacked his wraith (so not on a 4/5 skull match on my end).
I didn't see it happen on iPad btw, only on PC.
And I will keep an eye out for it, next time I encounter one of those teams (I think it's normally wraith tanking with bone dragon for skulls).
I don't have any video recording tools, unless you want me to film my monitor with my phone