Blue often is in need for playable 1drops, black is traditionally thin on 2drops. I really like Evolve and I like if the creature evolving is evasive, so I just threw it in.
That sounds less like a fight club and more like a, "if we coexist together, we could rule our respective CMCs" club.
Pelt collector I consider a bit stronger, but human on the ooze is usually more relevant in cube, the regeneration is also relevant to survive sweepers. I prefer the ooze because I want a resilient one-drop in my green deck more often than I want a better beater, but if G/x aggro is more relevant than humans/resiliency than I would go with Pelt Collector (or if you're playing elves).