I've just had something similar. Running Green Seer/Giant Spider/Kraken x2, into a team with Wraith in 1st slot.
Green Seer died, used Giant Spider and spawned a Spider Swarm. Created a 4/5 link which obviously proc'd the Kraken trait, but at the same time, the Wraith deathmarked and froze itself. Additionally, on the next turn I used Spider Bite, and the Wraith showed an attack animation on itself, and the deathmark and chill touch animations went off on the Wraith again.
Unfortunately I don't have any video, but the attached picture shows the frozen & deathmarked Wraith.