Theres only 1 that I know of, and that is heart of fire. It'd be cool if we had more. Heres an idea. Maxxarak's Throne 35 nora Units adjacent to this relic have sit. Units who sit on the throne gain immobile, charred, +4 damage, and the nearest ally gains relocate: ally.
2x2 relics would be nice but they need to have a more power to them. and maybe more of a unique feel.
Or add font aversion (whatever the hell barricades have) to any 2x2 relics, and make people form ranks in their units to deploy them! Gogo 2x2 formation!