Cursed beings from another dimension, worgen only appear in Azeroth as the result of magical mishaps. True aberrations, they are accidentally drawn through temporary rift tunnels and deposited in this world with no apparent way of returning. Nothing is known about the worgen’s home realm, or even precisely how to spawn the rift tunnels through which they come.

Worgen are usually encountered in small packs near sites of recent intense magical activity.A pack may contain four to twelve individuals.A worgen tribe may contain between twenty and two hundred individuals.Fiercely territorial creatures, they rarely stray from the general vicinity of the place in which they first appeared. Fearless beasts, they brazenly prowl near both villages and monster lairs. Although worgen display an apparent fondness for nighttime and its darkness, they can perform equally well in the daytime.

Pure killing beasts, worgen tend to attack any creatures that they encounter, regardless of whether animal, humanoid, Scourge or something even more fearsome. Strangely, however, worgen refuse to feed on the remains of their victims, preferring to shred and tear the corpses and then to return immediately to prowling. Rumors suggest that worgen somehow receive sustenance continually from their native dimension... as well as guidance from a distant force.

Combat: 
Worgen prefer to hide in shadows before leaping great distances upon their foes. They attack with feral tenacity, slashing with their deadly claws and biting with sharp, infectious fangs. Worgen are nearly fearless and typically fight to the death, relying on their regeneration to save them.

The saliva of a worgen carries a dangerous infection that can prove deadly against those who are bitten.

History:

The curse originated from a druidic sect who followed Goldrinn, known as Druids of the Scythe. They shapeshifted into the feral Worgen and eventually lost their minds to its violent nature. The other Druids agreed that they must be locked away, and thus put them into eternal slumber deep beneath a tree... until the day Arugal and Velinde Starsong tampered with the Scythe of Elune. It was the night elves, after all, who created the curse in the first place. Obliged to help their newfound allies, they re-introduce them to the Alliance. The worgen hail from a dark and treacherous world, from which there is no corner which is truly safe. There, the worgen battle their unflinching enemy in a vicious war; the Lords of the Emerald Flame. Ur, a mage of Dalaran, did research on worgen but never summoned them. Frustrated by the destruction of Dalaran by the Scourge and against the advice of his peers, Archmage Arugal elected to summon an army of the extra-dimensional entities by using Ur's research. The summoned worgen fought against the undead armies, but quickly turned on the wizards themselves. Driven mad with guilt, Arugal adopted the worgen as his children and retreated to the newly dubbed Shadowfang Keep, where he then cursed the village people of Pyrewood to turn into worgen whenever the sun went down.

Approximately at the same time, the night elf Sentinel Velinde Starsong was given the task to clear Felwood of demons. She prayed to Elune and was granted a magical Scythe which could summon worgen. She summoned larger numbers to fight at her side against the demons. Later Velinde began to notice that some of her force were unaccounted for. It was as though the Scythe of Elune no longer required her intervention for the summoning process. So she ordered them to remain at the Shrine of Mel'Thandris in Ashenvale and began to search for Archmage Arugal, whom she had heard also summoned worgen. From that point her fate was unknown, but it was rumored that she was killed in Duskwood and lost the Scythe. Black Riders from Deadwind Pass came to Duskwood looking for the Scythe and murdered a family of farmers in the search to find it. It is also known that the dark mage Morganth was searching for the Scythe of Elune, and stole Ur's Treatise on Shadow Magic as well.

In World of Warcraft: Cataclysm, it is revealed that the worgen curse has spread into secluded kingdom of Gilneas, transforming its inhabitants into the worgen. More recent evidence suggests that their true origin might have a connection to the night elves and a secretive druidic order from Kalimdor's distant past. Yet until new evidence comes to light, this information remains speculative. Many believe that a treatment for the worgen curse may exist, although others have nearly given up, fearful that if the barricades should fall, their humanity will be lost forever. The worgen will join the Alliance, but details of their inclusion are not known for now.

Racials

Darkflight - Activates your true form, increasing movement speed by 70% for 10 sec.

Viciousness - Increases critical strike chance by 1%.

Aberration - Reduced duration on curses and diseases used against you by 15%

Flayer - Skinning skill increased by 15 and allows you to skin 0.5 seconds faster.

Two Forms - Transforms you between Human and Worgen forms. You will revert to Worgen form in combat.
Classes Available 

Death knight, Druid, Hunter, Mage, Priest, Rogue, Warlock, Warrior

Heirlooms 

Latest Update 

Blizzard confirmed that heirlooms from the Wrath era will still work for new characters in the Cataclysm era, and specifically even for goblins and worgen. Since you earned them, you should still get to use them. However, they also note that the heirlooms will only work up to level 80.Will Heirlooms continue to give experience from 80-85?

Bornakk: Heirloom items specifically state that they go from levels 1 to 80 so we don't currently plan to make the currently available items auto-update to go to level 85 in the next expansion.

As for the experience gain, nothing is set in stone yet, but I think it makes sense that we won't want players to get a 20% exp bonus when leveling to 85. 


Are the new races allowed to use Heirloom items?


Bornakk: Things can possibly change, but currently there are no plans to change how the existing heirloom items work from levels 1 to 80.
Gilneas is a human nation and kingdom[1] located in the peninsula directly south of Silverpine Forest on the continent of Lordaeron. The kingdom was founded following the breaking of Arathor and is ruled by the Greymane dynasty. Besides the peninsula, the kingdom also included the island of Zul'Dare.

Gilneas is a large peninsula that juts into the sea south of western Lordaeron. Silverpine Forest lies to the north-east and Kul Tiras awaits across the sea to the south. Lord Genn Greymane never supported the Lordaeron Alliance in the Second War. Thus, after the war, he constructed the Greymane Wall: a massive barrier spanning the entire northern border. The enormous wall barricades Gilneas from Lordaeron. Gilneas does not allow anyone in or out, and none knows what has been transpiring there since the end of the Second War.

It was later found that the worgen curse has swept mercilessly across the nation, turning nearly all of its inhabitants to savage beasts. However, the denizens somehow retained their will unleashing a bloody civil war that wrecked the whole nation. Following the Cataclysm and an invasion by the Forsaken, Gilneas has rejoined the Alliance.