Lootable Books

Some spell books can only be found dropped by mobs, not purchased from shops. Some historic spell books are anticipated to make a return but are not yet in the current version of the game.
Confirmed dropped books on the current server are as follows. They have been seen dropped by a variety of overworld mobs across many level ranges.
* Elphame's Justice
* Fumble
* Greater Identify
* Gust of Wind
* Mass Fumble
* Sandstorm
* Unlock
Drop Only Books from FF server - Not in current game. Included for reference as some spells that may make a return.
Spellbook Name 	Acronym	Spell Circle Type	Mana Cost	Where its Found 	What it Does
Acid Cloud 	AC 	Necro 	3 	GH, Targoth's Tomb, FHP, USH	Casts an acid cloud over a small area that damages targets under the area.
Anti-Magic Aura 	AMA 	Myst 	 	 	Prevents caster from being targeted by magic. Duration based on SDM.
Dark Bargain 	DB 	Necro 	 	Church of Damnation 	
Despothe's Wrath 	DW 	Elem 	 	 	
Doppleganger 	Dop 	Necro 	18 	WA, FHP, IH 	Summons a copy of caster with reduced health and damage.
Duach's Vengeance 	DV 	Necro 	20 	USH, Naktos' 	Calls upon Duach's wrath to damage the target (SDM based). There's a ~30% chance to instantly kill a target with <25% health and generates a "soul" for consumption to change alignment by 20 points.
Enid's Blessing 	EB 	Thaum 	1500 	HC, Blacksmith's Bounty 	Fully heals all party and removes all negative status ailments.
Etherealize 	Eth 	Myst 	500 	Naktos',
GH 	Destroy contents of backpack (must be named ShopFood or backpack is also destroyed) and gives ~125% of its shop sale value.
Illusionary Foe 	Ill Foe	Myst 	9 	Greater Hive, The Maze 	Casts a random copy of the opposing party with reduced health and damage. Great for bosses.
Mabon's Forced Flee	MFF 	Myst 	 	 	Forces members of the opposing party to flee from battle.
Mass Heal 	MH 	Thaum 	60 	Avalon 	Level 6 Thaum spell. Casts greater heal on entire party.
Poison Barrage 	PB 	Necro 	150 	Avalon, HC 	Level 6 Necro spell. Casts poison bolt against opposing party.
Summon Elemental 	Sum Ele	Elem 	200 	Avalon 	Level 6 Elem spell. Summons a random elemental.