Mage's Primordial Vortex used DK's Asphyxiate

Mage’s Primordial Vortex used DK’s Asphyxiate when Reska’s deathrattle triggered.
imgur/a/Mk3kQch

Primordial Vortices do not cast spells.

I tried to view your image on imgur, but I can’t figure out what i need to add to the address you provided to make it work

Epic · Spell · Whizbang