It has the "GG End" logo on the middle right hand side of the card (In Japanese)
Unlike Tarkir , we dont have much of an incentive to go five colors, so the mana fixing part isnt that relevant
This Rare Holo card is numbered 4/113 in the set
Any serious ramp deck wants to draft big things to cast, not small or midrange spells that need you to draw a one-of to provide a big effect
So as a whole, I would say its obviously very good for Japan, but more than anything, its just trying to lean into the authenticity of what it represents to that market what the history is with respect to video gaming culture in that region, and making our players globally excited.
Though you are often taking a zero-for-one to do so, removing all your opponent's combo pieces can be worth it