Archmagus

This mod adds numerous spell books to the game, turning you into a powerful archmagus! Obliterate your foes with mighty fireballs, overwhelm your enemies with the armies of the undead, or teleport around the battlefield like a mad wizard: everything is possible with Archmagus!

For more details, see the thread over at the official Minecraft forums: http://www.minecraftforum.net/forums/mapping-and-modding/minecraft-mods/wip-mods/2124655.