Spells are the offensive or defensive abilities used by mages that cost mana. There are a large number of spells in Dungeon Siege and its expansion, Legends of Aranna. This is a list of the ones found in DS1 and LOA. Spells are divided into two main categories, Nature Magic and Combat Magic and then sub divided into two smaller categories, Offensive and Buffs. It is also partially useful for stealthy classes. One significant high level spell is invisibility, a spell whose effect's are only available to Nature Magic users.