In its sprawling FAQ section, The Pokmon Company addresses some big ones
II - Turn the exiled card face up
Watermark: Silverquill Illustrated by Chris Rallis Standard Legal Alchemy Legal Pioneer Legal Historic Legal Modern Legal Brawl Legal Legacy Legal Comp
This proved to be skill testing and fun, and the card we chose to push with it, Eldritch Moon built upon the divvy mechanic by having one of the piles be put face down, adding some unknown information to the mix
The Thunder Junction Limited format has entire archetypes built around this concept, from decks that care about casting two spells in one turn to decks that reward you for not casting any spells from your hand at all
So, if you have a Druddigon in your Active (who typically doesnt need any Energy to fulfill its role), Rough Skin does 20 DMG and as you attach Energy to Darkrai in your Bench, theres another 20 DGMF, totally the net damage you do to your opponents Active Spot Pokmon to a staggering 40 DMG