I can't tell that agreement was with evil, it could be opposite, say they had to prove that they are deserve their power. But being greedy and corrupted they completely pervert the goal. Say they had to prove that they care about planet and people, but since they are dumb, greedy perverts, they spent time making a show of solving non-existing problems they think out just to gain more wealth and power. And of course falling into all sins you could imagine including satanism and other crap, believing that it will help them to fool that higher power.

And facing deadline they just try to do all that useless crap with enormous zeal and hurry. That is why they don't hide anymore and we have a chance to see their real face with all that perversions, satanism and stupid and useless "care" about planet and people.