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Your devotion to red and green is the number of mana symbols among mana costs of permanents you control that are red, green, or both

Ovika, Enigma Goliath A surprisingly good enchantment commander, Ovika, Enigma Goliath got a huge shot in the arm from rooms, which can be cast for cheap but have an alternative high mana value option

Marath, Will of the Wild Arguably the best commander in Tiny Leaders, Marath, Will of the Wild grows every time you cast it thanks to commander tax, turning +1/+1 counters into real power over the course of a game

This just wouldnt be a commander pre-con without Evolving Wilds and Terramorphi Expanse