I think omnipotence could be handy. Omniscience would be nice too, but I couldn't have both of them at once with out causing a paradox, so since I have to pick, omnipotence. Which I could use to make myself as close to omniscient as it's possible to be without causing paradox. I might need that for targeting. Then I would start my meddling by making all humans impervious to disease and give small children the property of causing crippling pain to adult genitals on contact.
I'm not anti-Christian. I'm anti-stupid.