I've witnessed several attempts at this idea, and each is received with negative criticism.
A creature that buffs another (or an all) creature(s).
My recent idea was using military terms for creature skills like battle tactics. Off the top of my head;
Entrench: All creatures do not attack and gain +0|+2
Phalanx: All creatures do not attack and gain +1|+0
Why do you think such ideas won't work, and if you know why, what's the best way to approach it?
At this point, compared to SoP, a creature skill requires constant quanta-per-turn making it, in my opinion, inferior.