It takes away one of the most powerful tools a game designer has
That being said these decks are fairly two drop heavy and one drop light making it so you can often get away with shifting some things from the two slot to the three slot
If you have some Standard staples that will be rotating soon, you should try and trade them before rotation: Their prices will usually drop post-rotation
Other builds like to win with a big Lord of Extinction or Consuming Aberration sacrificed to Jarad, Golgari Lich Lord
Technically, you could count dual lands that produce red and green as Gruul cards, but I leave them off to save space for other cards
Sythis, Harvests Hand The ultimate enchantress card on rate, Sythis, Harvest's Hand is the only cEDH viable enchantment commander because you cant beat its efficiency