Elven high magic

High magic is the phrase used to describe a spell or ritual that will affect deities, or create world-changing spell effects. Typically, these spells are quite lengthy in casting, and involve expensive and rare components. For example, in the book The Lady Penitent, a priest of Vhaerun found and used a High Magic spell to open the realm of Eilistraee to Vhaerun, in order that he might slay her. This plot failed, and Eilistraee ended up killing Vhaeraun and absorbing his portfolio. The components for this mighty spell was a cavern filled with magical darkstones. The spell could also only be cast when a certain configuration of heavenly bodies existing in the skies of Faerûn. Elven High Magic is also accredited with creating the Mythals of elven cities.