When you and your friends enter the coliseum, you will face the first of several bosses. You need to defeat the bosses one by one. You must master the encounters one by one, until you finally face the raids final challenge. There are more challenges on the Heroic version of the Crusaders Coliseum, you and your raid only have a limited number of attempts for each raid lockout period, and each time your raid wipes, one of your attempts will be used up.
When you enter the Crusaders Coliseum, you have to fight against a group of terrifying beasts the Argent Crusade captured in Northrend, including (but not limited to) a magnataur and 2moons dil, but two jormungar wyrms.
You can certainly sell the same items to vendors for a straight up price but the profits are going to be much greater if youre able to sell to another player who holds that good at a higher value than yourself or the vendor. By AH is the best way to do this. The AH is 2moons gold maker for everyone; its not there to destroy your income and its simply a way to link players in the most convenient way possible. Therere several items, selling very well on the AH. You have the ability to make a good deal of 2moon dil with binding on equip blues, greens and epics as well, which are extremely popular. These equips drop in instances quite frequently, and in special cases they will drop off rare spawn or random spawn while questing. The higher the level or rarity of the item, the more it will sell for. Remember that certain stat increases like agility tend to sell for higher.