combat against other players. On both server types, there are special areas of the world where free-for-all combat is permitted. World of Warcraft also makes use of battlegrounds. These locations act in a similar way to dungeons or instances in that only a set number of characters can enter a single battleground, but additional copies of the battleground can be made to accommodate additional players. Each battleground has a set objective, such as capturing a flag or defeating an opposing general, that must be completed in order to win the battleground. Victory rewards the character with Honor Points that can be used to buy armor and weapons. Initially a ladder-based system was implemented, where the Honor Points accumulated in a week would affect that character's standing in the ladder, allowing them to purchase more powerful weapons and armor. This was changed following the release of the Burning Crusade expansion so that equipment became available to all, with Honor Points being used to exchange for pieces of equipment. In Legion instead of Honor Points for gear the player is given a box that possibly contains gear and artifact power. Arenas are a further development for player versus player that were added in the Burning Crusade expansion. In these, a player's character can join a team in order to compete in arena matches. These matches are among a small number of characters (between 2 or 3 per side) in two teams. Participation in arena matches rewards the character with a number of Conquest Points, depending on the result of the match. Successful arena teams can use these points to buy armor and weapons of a higher quality than those available from battlegrounds. Blizzard and other organizations also run a number of arena-based tournaments, where teams can compete against each other for cash prizes. In the Wrath of the Lich King expansion, a new player versus player zone was introduced called Wintergrasp. For player versus environment realms, this zone differs in that players of the opposing faction are able to attack each other merely by entering the zone which flags them automatically for player versus player combat. In Legion there were a number of changes to the PvP aspects of the game. There is a PvP honor system that unlocks PvP honor talents and there are separate abilities for use only in PvP that are not available in regular gameplay. Honor talents are