40k reference in Destiny Rising

Destiny's mobile game, Destiny Rising has an interesting reference in the latest update. The strike mission Colliseum ends with you taking on a Cabal Beastmaster in gladiatorial combat. After you rough him up a bit, he tags in his actual beast:

A huge version of the war beasts (wolf-sized reptiles the cabal domesticated) called "Leman Russ's killer"