Okay, so Radtha, Heart of Keld is probably my new landfall commander.
More importantly, is anyone even close to as hype as I am for Five Color Shrine Tribal? I don't know who the commander is yet, but I know it has all the Sanctums, Hondens, and probably the Genjus, too. Sadly, I'm expecting the commander to be something boring like Kenrith or Golos due to lack of a synergistic choice in rainbow.