Well, a few more than 20, but green always gets to have its cake and eat it
Write a Description of Your Deck If desired gameplay experience is more important than power level for finding a good game of Commander, then you need to make sure you can articulate what your gameplan is and what your deck seeks to do succinctly
Extended (that's no longer a supported tournament format, but you could still be playing it at the kitchen table, right?) Rainbow Stairwell
Silent Arbiter Silent Arbiter is great for control or pillow fort decks
Until Aradesh up there, enlist existed solely as a one-set draft mechanic in Dominaria United
The Fugitive Doctor EDHREC has The Fugitive Doctor way down at #12, and theres no doubt shes a bit less powerful than some of the others