You also get to deny your opponent card advantage from Cryogen Relic leaving, too, which is a nice bonus
For instance, green offers Surrak, the Hunt Caller and Duskwatch Recruiter
Toss in free card draw, and you have a winner
Most amusingly, this set of decks is due to be released on 10/2, the same day as Reality Fracture and the Multiverse Reforged deck
Some things, like Scry and Planeswalkers, have been and will be around for a long time, but theres only so much design space to be mined
However, the Shinra Company has monopolized mako production, and in doing so established a powerful hegemony, its influence reaching the far corners of the globe