The debut of Walhart and Excellus in FE Cipher this set brings in an important theme in mind: the reign of overwhelming power.
To reflect Walhart's huge strength, his SR is designed to give him a respectable boost if he faces anyone up front, and capitalizes it by preventing anyone from trying to hide in the rear. Excellus, Walhart's advisor, is a support card who aids Walhart by maintaining keeping enemies up front for him to slay, though outside of this niche he isn't particularly outstanding. Overall, a good pair of cards who like to go together. Anyone who plays Walhart will definitely want Excellus too.
Walhart might be my favorite villain in FE Awakening, so I'm pretty pleased with his FE Cipher appearance. Cool to see him get an SR too.