Is Darkest Hour still tier 1 after the nerfs? I have my doubts. (Wild ranking)
Not as many people are playing Darkest Hour Warlock right now, so the card should move down, but it still displays a decent winrate. I moved it to Tier 2 for now; in the future, it may move down farther.
With the release of Descent of Dragons, the Epics from that expansion have been added to the list. Realistically, we cannot place them with the data currently available yet, but over the next week or so we should find out where they belong.
In the meantime, you can check the projected placement to see which Epics look to be the strongest in the set. Also, keep an eye on the Epics from previous expansions, as some of them will likely move to different tiers very soon.