These are things that every deck loves to do, and Power Without Equal can provide you with exactly that
The reward you get from Roil for not being able to target lands is an easier casting cost of 1U and a kicker for the same cost again to draw you a card and represent Cryptic Command in bounce draw mode
Im just not excited by the idea of spaceships and planets generally, and given the choice, I will always pick fantasy on top
In the Sealed format, you'll want to build a two-color deck
Later, he can quickly double all your tokens and help you turn your small squad into an unstoppable token army
Planeswalkers are usually very hyped when a new set comes out, and this one is even colorless, so it becomes a staple in EDH decks that ramp hard or want the game to go long