Way too broken, only way to make it balanced would be to make it give you no armour and reduce your health to <5

I designed the card to be high-risk high reward.  Keep in mind that it essentially only gives 6 armor because of Xal'atoh.  You have to get rid of your entire hand to play it and take double damage for at least three turns most of the time. Some of the Death Knight cards are made more detrimental like Obliterate and Doom Pact since you would take double damage or burn two extra cards since the Hero Power summons two tokens.

Maybe being able to just Smorc with the weapon is a bit over the top.  What if part of the battlecry was making it so you can't attack heroes right away like Charged Devilsaur.  That way you have the double damage longer unless you get lucky and topdeck a weapon.

If anything I’d argue it’s way too weak. Unless you have some way of switching out the weapon, playing this card is going to make you lose 9 out of 10 games, just because of that double damage.

Unless you have so much armor you can’t  be killed that easily, but at that point just play a different card.

Remember, you’re doing nothing during your turn, other than dealing 7 damage. Gorehowl would be a better play during your turn than this, because you’re encouraging removing minions, while also heavily punishing them for removing minions. You want the weapon to break as soon as possible just so you have a chance at winning

Why does it need to do so much? Why not just make it 2 mana a"a random death knight card to your hand" for instance? Why also the elementals and the armor? Why does the weapon also not lose durability when attacking minions? This card seems far too bloated for a game that's purposely kept as casual and easy to understand as possible.

Quote From iWatchUSleep

Why does it need to do so much? Why not just make it 2 mana a"a random death knight card to your hand" for instance? Why also the elementals and the armor? Why does the weapon also not lose durability when attacking minions? This card seems far too bloated for a game that's purposely kept as casual and easy to understand as possible.

I wanted to squeeze in effects from all of the different characters merged into one in the art.  The battlecry is the same as Deathwing's, the weapon is a corrupt form of Garrosh's signature weapon Gorehowl and it doesn't lose durability as a reflection of Gorehowl's effect.  The elementals are the same ones summoned by Illidan Stormrage and the Death Knight cards are the same ones given by The Lich King. Maybe the armor is a bit much, but I felt it needed some way to offset the double damage you'd be taking from Xal'atoh.

I chose to make the Hero Power do a lot, but cost more because we haven't seen anything like that in-game outside of single-player content on some of the bosses, so I felt it was fitting considering that Garthas is a fusion of 4 of the most iconic bosses in World of Warcraft.