When you are in a group, the main task is to take out enemies swiftly. You should prepare WoTLK Gold with an /assist macro on your primary tank. You should then cast single-target spells against whatever the target is. If needed, you can use area-of-effect spells, however you must be cautious when you do this, since they can disrupt things such as Sap and Polymorph as well as create monsters that haven't yet had threat created yet to attack you.
If you're able to be close enough to the action, Arcane Explosion could be an enormous help in eliminating tough enemies.
Beyond the pure damage the primary benefit comes from Polymorph that is considered to be one of the top capabilities to control crowds in the game, since it can take one mob of players out of fighting for up to up to 20 minutes, or even longer when it is at higher levels. It's not possible to use it on all enemies however it will work on humans and beasts which are two of the most popular enemies. Use it whenever your tank is able to draw in many enemies. It is possible to tie this into a targeting macro for example:
Your teammates will know what mob you'll Poly and (hopefully) will not focus on it until the polymorph is gone.
It is also possible to be asked to help particularly for food and drinks. If you are a part of any group, you'll be tempted to buy WoTLK Gold make a drink mix for all the players in the group, in case they require the drinks, and remember to use Arcane Intellect on any player with Mana bars. Make sure to train in teleports as well because they're often the only method of safely take someone who is burned in World of Warcraft from the beginning of an encounter.