Imagine if someone had the summoner Nomos and used it against your Helheim Demon, nullifying his magic attack. He'd be a tank to hold the front line at least... if other attackers were positioned behind him...
That Moxian Rebel card and as soon as it is at Level 4 it can't be directly targeted for attacks unless in the first position. That along with 'Adjacent units with no attack gain this unit's attack, up to a maximum of 3' make a it a sweet combo :D.
Glad that you've got Anachron Bolter! See how he faired in my battle just recently where I ONLY had level 1 cards with a Level 1 Summoner, but was still victorious against a level 4 Summoner (Helios Matriarch), a Level 5 Coastal Sentry, Level 5 Swamp Spitter, a Level 3 Clockwork Aid and the Level 1 cards Kulu Mastermind, Isgald Vorst & Noa the Just:
https://splinterlands.com/?p=battle&id=sl_62f546c310e66ec72444432e50c8adcd

I look forward to following your journey more.
P.S. I just had to go and get a Level 1 Moxian Rebel just now. Thanks for the lead! :D