Hearthpwn

I agree the card should be better and deal 12 damage instead of 10, but it is still a valid option and combos really well with Doomsayer to give lethal if opponent has 10 or less hp.

It should also deal 12 damage for flavor purpose.

When C'Thun was a child, it was his favourite toy.

It's a pseudo Board Clear against Aggro decks. Rafaam being a 7/8 makes him vulnerable to BGH but Aggro decks don't play that thing. So, against a Control deck, you pick the Mirror of Doom to counter a BGH, or if you have another minion on board you pick the lantern. The opponent won't have another BGH to counter the +10/+10. 

Poorly underpowered, Blizzard really have to buff this option, or at worst replace it with a slightly stronger Pyroblast.  Yes I've won game with this, but in those scenarios are those that are almost irreversibly winning condition. 

Mirror of Doom is basically a superior version of Open the Gates, and Lantern of Power is basically of the same formula of Blessing of Kings, whereas this shit, is literally a 3.33x version of a single Arcane missles that cost 10x the cost. How on earth could you justify that?! I would say this at least have to be a 15 damages, a 12 direct damage, or a superior version of consecration( 'deal 5 damages to all enemies to be justifiable' could be too OP, but at least makes it 4 . Keep in mind that this is a 10 mana card, which means that you could not combo it with any thing else in your hand, so whatever seemingly OP combo you pulled out are completely predictable and counter-able.

And since it's a timepiece......logically speaking it should do 12 damages.

I think this is the YOLO option. Enemy hero behind taunts and has lethal on you next turn. Pick this and pray to RNG that it mostly goes face and takes him out.

Meh. Definitely seems like a win-more card. If you're behind it just doesnt do enough.

Should be 12 damage instead of 10. Then it follows the same mana rules as Arcane Missiles and Avenging Wrath (# of missiles - 2) and it also fits the card better since there are 12 numbers on a clock. Another option would be 13 damage since it IS supposed to be a super powerful card plus it'd also tie into the "horror" part a bit more. As of right now... it's just inefficient and will rarely be picked for anything other than it's wicked awesome animation.

Arcane Missiles and Avenging Wrath don't leave a body on the board...

I don't see what you mean by that.

I mean that it's invalid to compare this card to other cards such Arcane Missiles and Avenging Wrath. 

They're class cards so they're valued differently anyway, but this is from a 9 drop that gives you a 7/8 body as well as this card. 

Arcane Missiles and Avenging Wrath being class specific doesn't mean anything. All 3 are still play it and shoot x random missiles. They're the exact same concept. As for the body that doesn't really matter either since it's unlikely to stick. In the grand scheme of things the 7/8 really just means you lose your turn 9 to choose between 3 cards and if you choose this its a slightly less efficient form of Arcane and Avenging.

Class cards are valued over neutrals. Not to mention the fact that this card is in addition to a 7/8 body so part of its value is invested in that. 

The cards have the same effect. Whether it's a neutral or not isn't important. Both Arcane Missiles and Avenging Wrath follow the same damage formula. (# of missiles = to mana cost + 2) This card should also follow the same formula since it's the same effect. And like I said earlier, the 7/8 body will rarely stick. If it DOES stick then you're either too behind to win or the Rafaam will likely finish the game out by himself.

It doesn't matter whether it does or does not stick! What your opponent may or may not do is not factored into the value of a card. It is valued according to the fact it is both a neutral card AND the product of a high stat, high cost minion. 

P.S. Stop downvoting my comments simply because I disagree with you. Child.

Someone's quick to anger. But you DO have to take into account your opponent's actions because predicting your opponent's reaction is very important. Either way, the card should still follow the formula of Arcane Missiles and Avenging Wrath because it takes a turn for Rafaam to provide any value even if played on curve, plus it's supposed to be a powerful effect but a less efficient higher up of Missiles and Wrath isn't what I'd consider powerful. And again, it being neutral means nothing other than the idea that any class can use it which WOULD be valuable if it was something the classes actually needed. As for Rafaam himself the best he's gonna do is get BGH'd, executed, or deathed. The fact that he'll die off quickly is important because if you play something that'll die and leave your opponent with the mana to play more things then you've just lost a lot of tempo unless you've already got the board to lose the tempo with.

P.S. I'm actually not the one downvoting you. Props for jumping to conclusions.

It makes you realize how long you've been playing video games instead of doing work, and you reel in horror taking 10 damage

Funny card. I can't wait to eat one of these.

... and draw a card? ... and summon a random mech? Seems a little too underwhelming

Hmm.  3rd wheel compared to the other two artifacts