As title says, is there one? I know that Old Love (Arya's campaign) grants the limited Arya and the Nora Disturbance one gives you a different Firk. What are the other rewards from other campaigns?
I am unsure if Ayla and the Firk come from campaigns because they were originally given out as a code during certain conventions. They may have since been added to a campaign but they were not received from the campaign originally. Mysterious Elf comes from Nefari Insurrection on Legendary Blood Owl comes from Boons Eve on Legendary Commander Nisk comes from the new campaign on Legendary. I think thats it.