Dragon warhammer (Altarius95)

This is one of the most powerful weapons in the game. It's special attack, Wake of the Dragons, inflicts double the usual amount of damage, drains ALL the opponents prayer, AND stuns them for 15 seconds, which drains 100% of the special attack bar. Many players favour it, but it cannot be bought on the Grand Exchange, and Tresfar, the only seller of the weapon, only stocks 5 of these per day, meaning players will pay over 2 BILLION COINS for one.