Designed as a natural evolution of Magics vehicle and racing themes, start your engines draws inspiration from previous mechanics like energy in Kaladesh , but it applies its effects directly to the player instead of just creatures or artifacts
as anyone who has played BW Tokens can attest, an airforce of 2/2 flyers is much scarier than a flock of 1/1s
Edge of Eternities is scaling back the volume, with two decks: World Shaper and Counter Intelligence, and you can find the full decklists here
They might not help you win a popularity contest, but these cards can punish greedy land bases while doing very little to hinder decks that are built to operate without access to nonbasic lands
More than that, it can help pull two stalling players back into the game, by hitting both of the players furthest ahead
Like a fabulous shooter once said, get psyched!