A war is declared by the leader from their own guild page, and the other side has to accept it. In game it is the !war command.

No arena war has started yet.

An arena war is declared in the game with the !arenawar command, and the other guild has to accept it. It is fought on its own island, Ironfield Isle, which events never use. The declaring guild picks the mode: safe - death on the arena costs nothing, but both guilds pay an entry fee (at least 10000 gp); loss - death costs as anywhere else and the bounty is optional. Only kills on the arena count - the score is kept between sessions until a guild reaches the frag limit. The bounty (or entry fee) is the stakes of both guilds together, and the winner takes it. A war ended with !arenawar end before the limit has no winner; if it was fought for a bounty, it is a surrender and the opponent receives the whole bounty.