Big team slayer no wraiths.

Every time I play big team battle, why is there never a wraith in Ragnorok, Longbow, & as of now Vortex?

i believe in ragnarok and vortex, they replaced it with the mantis and in longbow with the scorpion.
however, i’m guessing u try to accomplish the wraith destroyer commendation? u just have to destroy wraiths in SpOps, that counts as well.