So, i keep seeing people train characters and pets at the Acid Slug Pits, when there are far better methods of training those specific skills. Those people end up slowing down the gains of those for whom the Acid Slug Pit is actually best for.
Gregorio the Brigand (near the Skara Brae Ranger Huts and farms) is superior for training a pet's Magery, Necromancy, Chivalry, Bushido, Ninjitsu, Mysticism, or Spellweaving skills. Gregorio is immune to virtually all damage (with a few specific exceptions) unless you're on a specific quest, so you or your pet can cast on him indefinitely without having to switch targets. You can even have Gregorio disarmed, and have him aggroed onto you (he won't deal any damage unarmed), then tell your pet to Kill then quickly Stay from several tiles away, which will have the pet rapidly spam any spells it has, increasing the rate of skill gain (this will also prevent your pet from using any melee specials like Bleed or AI, and allow it to focus 100% of it's mana on spellcasting, including Chiv).
The only time the Acid Slug Pit is better for Magery, Necromancy, Chivalry, Bushido, Ninjitsu, Mysticism, or Spellweaving skills for a player, is if you're in Wraith Form and able to leech Mana from the Slugs then. Otherwise, Gregorio is better for it.
The Acid Slug Pit however is absolutely superior for pets to gain Discordance skill. It's a never-ending supply of rapidly respawning targets for them to discord. So please, leave the Acid Slug Pit for the Discord pets, they already gain slow enough as is.
Gregorio the Brigand (near the Skara Brae Ranger Huts and farms) is superior for training a pet's Magery, Necromancy, Chivalry, Bushido, Ninjitsu, Mysticism, or Spellweaving skills. Gregorio is immune to virtually all damage (with a few specific exceptions) unless you're on a specific quest, so you or your pet can cast on him indefinitely without having to switch targets. You can even have Gregorio disarmed, and have him aggroed onto you (he won't deal any damage unarmed), then tell your pet to Kill then quickly Stay from several tiles away, which will have the pet rapidly spam any spells it has, increasing the rate of skill gain (this will also prevent your pet from using any melee specials like Bleed or AI, and allow it to focus 100% of it's mana on spellcasting, including Chiv).
The only time the Acid Slug Pit is better for Magery, Necromancy, Chivalry, Bushido, Ninjitsu, Mysticism, or Spellweaving skills for a player, is if you're in Wraith Form and able to leech Mana from the Slugs then. Otherwise, Gregorio is better for it.
The Acid Slug Pit however is absolutely superior for pets to gain Discordance skill. It's a never-ending supply of rapidly respawning targets for them to discord. So please, leave the Acid Slug Pit for the Discord pets, they already gain slow enough as is.