I have him in my 3 star diamond deck, but i havent played ranked at all seriouslly yet, i plan to devote a weeks worth of free time ( 2-3 hours/ night ) when i can to get to GM 2-3, However i pretty much snowballed to D3 using cenarious as my most expensive drop.
That doesnt mean i like him, quite the opposite, when you consider a 9 drop lets talk about what he brings to the table.
2/2 all minions, you have buff cards, This isnt worth a 9 drop
2x 2/2 with taunt, i pretty much only ever go for this option unless i have enough on the board for a 1 turn kill with the 2/2 stats, The good thing about this is it "usually" allows you 1 turn with cenarious after you drop it, as you now have 2 taunts for your opponent to deal with, problem is, even if he does survive, you now have a 5/8, Hardly worth a 9 drop.
Lets compare what else you can get out,
Ysera being the most noteable i think, even if your opponent uses 3-4 cards to remove it, you have now gotten a dream card, and if its left on the field, you win in about 3 turns.
Rag, speaks for itself, wins games in the turn its played if lucky.
2x druid of the claw, 4/6 x 2 with taunt, vs 5/8 + 2/2x2 taunt. This is without the charge option.
I just feel for his mana cost hes not worth it, im still using him, tho i dont have a rag or ysera to change him with, but i think once i start grinding ranked his days are numberd.