New Silithus Mount

[Quark]

Makes the Sulfuron Hammer look quite wimpy.
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Makes the Legendary version look wimpy too:

Sulfuras, Hand of Ragnaros
Binds when picked up
Unique
Two-Hand Mace
223 - 372 Damage Speed 3.70
(80.4 damage per second)
+12 Strength
+12 Stamina
+30 Fire Resistance
Durability 145 / 145
Requires Level 60
Chance on hit: Hurls a fiery ball that causes 273 to 333 Fire damage and an additional 75 damage over 10 sec.
Equip: Deals 5 Fire damage to anyone who strikes you with a melee attack.
Sells for 33 Gold 26 Silver 23 Copper to vendors
Item Level 80

Of course, the dagger on that same loot page ...

Death's Sting
Binds when picked up
Unique
One-Hand              Dagger
101-152 Damage    Speed 1.90
(66.6 damage per second)
+10 Stamina
Requires Level 60
Equip: +38 Attack Power
Equip: Increased Daggers +3.

... makes Thunderfury's base DPS look piddly. Of course, Thunderfury procs ~30% which translates to over 47 DPS just from Thunderfury proccing off melee attacks. There's claims on the test server that it's been nerfed though, so that it can only proc off regular/skill attacks, instead of other procs. Still shady on the whole details of that.