(but really the Druid one, not my favorite, but definitely up there)
First thought is C'Thun Rogue. Second thought is N'Zoth Rogue. Third Thought is Yogg Sauron... Mage. Then try Yogg Sauron Rogue. Maybe Shaman if I get the cards for it, but I'm probably not going out of my way to make that work.
Serious question : rotation won't make GvG cards available again in a (near?) future ?
Card looks like a ton of fun. I was really bummed that echo of medivh was removed from standard, but this is almost as good, but it's for a really cool class! I'd maybe include it as a 1 of in my fatigue warrior. Would be really sick to get additional deathlords or a tournament medic (yes I have a 2 gorehowls fatigue warrior deck, and yes it has tournament medics... Really underrated card honestly). This card can also synergize with Injured Blademasters lol. Now if only there was a warrior discover card!
I can see this played with an extremely aggressive Warlock based early game. Once you're hyper aggressive tools stop being so useful, you play this and get a reroll. Hopefully it's a good late game. It's too random to be a win condition though. But there are worse gimmick decks.
Even if my opponent is playing some kind of rediculous Aggro list, sometimes I try to add them as a friend afterwords to compliment they're list. Especially if it's something I haven't seen before. Like "Dude you're aggro Mage list is dank"
Don't get me wrong, I love this card (even though I don't play Paly, and have mixed feeling about playing against it), it feels a lot stronger than the other revealed ones. God I hope the Rogue one is decent.
I'm probably the last person you want to comment right now, as I don't play Paladin outside of the odd arena run.
But I like your list overall. It runs a lot of removal which should handle most aggressive decks.
I also like the inclusion of a lot of draw. Which is great when you're trying to dig out one huge minion to end the game.
But I don't like Avenging Wrath. If you want to control the game and curve out to one or two big minions to end the game, why run Avenging Wrath? 1)It is completely random, so not reliable board clear. 2) It is usually a finisher, a push for some extra damage. C'Thun does it better.
I would consider adding Abomination. Its a board clear added to a taunt. (I don't remember if its even good anymore though).