This item is currently not available in the Guild Wars 2 API and you are seeing the last known version. The item has either been removed from the game or needs to be rediscovered.
Gain a summoning charge whenever you kill a foe. At 25 charges, you summon a fleshreaver. (You lose all charges on down.)
"description": "Gain a summoning charge whenever you kill a foe. At 25 charges, you summon a fleshreaver. <c=@reminder>(You lose all charges on down.)</c>"