Hearthpwn

Mulligan for Prince, Fire Fly, or N'Zoth's First Mate. You may want to keep a Tar Creeper or a Ravaging Ghoul if you're against aggro, and you might keep a Mountainfire Armor against priest.

The whole point is to maintain a strong board advantage with your whirlwind effects. There are several taunts to protect your Frothing Berserkers, your Kor'krons, your Rotface/Grom, and your face (which is often necessary if you don't have anything to drop on turn 2). N'Zoth and Rotface can both replenish your board control in the end game, but be sure not to over-extend in the mid game since there is no draw.

Also remember that Keleseth gets significantly less valuable as you get later in the game; if you only have a couple of turns before the game ends, you're generally better off playing for tempo.

Some potential subs:

• Rotface: Hogger, Doom of Elwynn is fun, but a second Bonemare would probably work great too.
• Cairne Bloodhoof: I'd really recommend crafting this guy since he won't rotate out and has been popular since the beginning, but the same subs apply here as for Rotface. It's definitely a big loss on the N'Zoth front, but it's manageable.
• Animated Berserker: Blood To Ichor is a close second choice, but I like its capacity for multiple pings to work across a couple cards/turns or to really buff up Frothing Berserker. Whirlwind could be another option, but that's fairly superfluous with all of the other whirlwind effects. (I've since replaced these with Cobalt Scalebanes, since there are only a few targets for Animated Berserker and Blood Razor + DK more than covers it)