Key cards that youd be looking at are the likes of Ethereal Armor, which gets insane with a lot of other auras, or Blazing Shoal which you can use to make a creature huge for not much mana
The major note that Id like to give about three-color Cubes is that a significantly higher volume of the cards that you draft will be castable than usual, which makes drafting mono-color and three-color decks easier than usual and also means that more playable cards will be in your sideboard than usual
This type of card stock is dense and durable, designed to hold up to regular handling and shuffling
Not too shabby, but that's a lot of breaks - it's legendary, needs to be attacking, but it will work on stuff like Syr Konrad and such
The lands needing to get moved around is especially egregious, and thats why I got the Mire, to be in a second deck
You'll always have a full hand with this enchantment in play