If you have cards in your hand that wont be useful in the next couple of turns, you can cast Brainstorm, put the cards you dont want on the top of your library, and then fetch a land
Despite not being a draft format, this is the set's take on The Prismatic Piper or Faceless One, in that she is a colourless commander that can partner up with any Doctor to make the colour identity you want
If its in your opening hand, and youre not the starting player, you can start the game with it on the battlefield, at the cost of exiling another card from your hand
While these cards are the same price, and The Vision is more durable, Emeritus being uncapped means theres no competition
Kura, the Boundless Sky Kura is the reincarnation of Jugan, former protector of the Jukai Forest