Mike Ferguson, Arenanet developer, went on the forums today to inform players that Golem in a Box, a fairly popular consumable used/abused in WvW, will be disabled in WvW after Jan 28 patch.
You can buy them in Metrica Province for 8 copper a piece. They increase in power off your stats. Was getting hit by them for 5-8k, you can just spam them on a target – Quenta.2978
They will not be usable in WvW after the next patch.