We have tools to do it, if we have time to set it up
While it ramps an opponent in return, thats fair for this being only a single mana
Adding Malakir Rebirth and Sejiri Shelter are a no-brainer, as is more color fixing
Before calculating the numbers, I assumed that the mythics would be lacking in value, mostly because the set is lacking the one really expensive mythic to help drive up the average value (while Gideon of the Trials is a chase mythic, at just over $21, it isn't the same as Liliana, the Last Hope, Chandra, Torch of Defiance, and the other uber-expensive case mythics we've seen in some recent sets)
Everyone has a price they're willing to pay, and I'd love to see it in the comments or on the Draftsim Discord