Mephitic spellbook

The Mephitic spellbook is an offensive spellbook, meaning a majority if not all of its spells are used for attack. This is the highest level spell book in the game. It contains the highest level spell in the game, virulent cascade, which requires a Magic level of 100.

To access this spellbook, the quest The Poison Project must have been completed. The lowest spell requires 74 Magic to cast.

Spells and teleports
The Mephitic spellbook is an offensive spellbook, containing _ combat spells.

There are _ spells in the Mephitic spell book:
 * Toxic smoke (level 74)
 * Bolt of infection (level 78)
 * Poison weapon (level 80)
 * Infectious eruption (level 83)
 * Venom shot (level 87)
 * Graveyard teleport (level 87)
 * Biological incapacity
 * Miasmic discharge (level 89)
 * Poison Water (level 89)
 * Septication (level 92)
 * Destroy organic items (level 95)
 * Virulent cascade (level 100)
 * More soon...

Trivia

 * Originally, there was a large community backlash at Jagex for having adopted a spell which required some kind of a boost (and it already required a very high level anyway) to cast. However, given the reveal of the nature and power of the spell, it was clearly necessary that use of the spell was very limited to only the most accomplished players.
 * With 95 Magic and the ability to use the mephitic spellbook, players can skill fishing at an extremely efficient pace, as they don't have to waste time dropping or banking the fish as they can just use 'destroy organic item' spell, which will delete all the fish in the players inventory. They also gain good amounts of magic xp at the same time, although it is quite expensive and requires runes.