I can't spawn Vermivorous and I've been trying for a long time. I managed to spawn 2 ultimates 2 times at the same time yet none of them decided to go Vermi.
If you guys have those mods and are willing to donate OR trade please let me know. I've got only a few legendaries that I can trade since I've only just started farming. I have a couple variants of the CC, the Bee, Striker, the bunny and the flakker.