This mod adds:Soul Stealing Enchantment - A weapon enchantment that allows mob souls to drop on kill. Mob Souls - Mobs that are naturally found in Mob Spawners only drop their souls in the game. Spawner Fragments - Dropped by breaking Mob Spawners, increased drops with Fortune. Inactive ...
Minecraft Forge mod for dropping, reconfiguring, and disabling XP dropping with Mob Spawners - Visual-Illusions/SpawnersPlus