Dont Forget the other Ikoria: Lair of Behemoths Cards
Battalion is always a bit of an ask in Commander, but putting card advantage on Boros Strike-Captain makes it slightly more attractive
Kitsa, Otterball Elite is a wonderful inclusion for Kess
Except these creatures cant block, which makes this fill a completely different role than the likes of Castle Ardenvale or Legions Landing/Adanto, the First Fort
The cards inside are carefully chosen to be straightforward and powerful without being overwhelming, letting you focus on learning the flow of the format rather than juggling a hundred complex interactions
EnergybendingEnergybending allows you to abuse the various cards that care about basic land types, and in Dimir, that is both High TideHigh Tide and about a dozen "cares about Swamps" cards