Neutral cards dont need any specific sphere resources to be played
Surge Engine A lot of discussion has already been had regarding the unnamed but numerous examples of a Figure of Destiny creature
All you need is a way to buff him up and land a hit, and you're off to the races with an instant army that replenishes itself with each attack, or even grows exponentially True, Shroofus will mostly see play in the 99 of other, multicolored decks, but he can make for a powerful commander all by himself
Its not an easy task to solve this problem, so you can change the cube size, the Draft method, or even play something else like Team Draft, Team Sealed, or Two-Headed Giant
Midrange and hatebear decks love to have this kind of versatility without sacrificing slots