I basically have one EDH deck, and it's Mayael the Anima. She's lots of fun; I like spinning the wheel and slamming a random fatty every turn. Here's my thoughts on how Avacyn Restored affects the Mayael deck.
This isn't going to be a reliable fixer even if you're a tribal deck, since it doesn't work on activated abilities or noncreature spells. I don't think it's good here. There's too many other colorless-producing nonbasics fighting for space, and this one doesn't do enough to justify the slot. Given the high price it's guaranteed to fetch, it's just not going to be worth it.