After a few attempts on other saves, this run through took a nice turn. I’ve been building up a Diabolic Horde team, which was going a bit slow since I put most of my resources into building my nether instead of more creatures. So I still don’t have the attack booster for the team, though I did get the one that gives Link. Fortunately, just before I finished leveling all my gems to 10, I found a Demon Dust.
So now I have a Demonic Diabolic Intruder, who happened to get Rootsplosion as his ability. Not a bad first Demon, and it should definitely help my new Diabolic Horde team out.