All spells that use blood magic have to be unlocked by researching this school. If your nation has any blood mages, you will want to do some research here. - Illwinter.

In case you're wondering why you got taken to this page when you clicked on the Blood link on the Magic page, that's because all spells that require the Blood path are from the Blood Magic school!

The reach of Blood Magic's versatility covers most of the other seven schools of magic, but it's most-well-known for its Conjuration functions: summoning scary stuff.

• Fire lets you use Blood to call Devils from the Inferno. With enough research, it can be used to banish a foe there in the midst of battle, or even to summon one of the five Arch Devils. It also lets you use Hellfire in battle, and can be used to boil blood without Blood Slaves.
• Air lets you use Blood to call Storm Demons, powerful & mobile Demons, from the Tempest Realms. It can also be used to uncork Pazuzu's wrath on distant provinces.
• Water lets you use Blood to call Frost Fiends, powerful ice-firing Demons, from the Icy Realm of Kokytos. With enough research, it can be used to banish a foe to that hellscape in the midst of battle, or even to summon one of Kokytos's six masters.
• Earth lets you use Blood to call Demon Knights, hellish & well-armed Cavalrymen. It can also bring power to the dormant Earth to serve you, tainting it in the process.
• Astral power is the "currency" of all Magic except for Blood Magic, but Blood can still add dark power to the Astral wellsprings and draw the Astral Plane's worst Horrors to the caster. See Horrors & Horror Marks for more details.
• Death lets you use Blood to bring Undeath to living beings without killing them, turning them into Vampires. It can also summon Bone Fiends, the skeletons of Demons who have died of old age.
• Nature lets you use Blood to facilitate unholy unions of the different species of the world (Cross Breeding). It can also feed and/or taint Nature directly, and can be used to Purify Blood in battle.