The spell 'conjure element' is one of the most powerful conjuration spells known. With the spell the spellcaster is able to learn a major protection element that is bound in a magical object. The spell consumes one reagent typical to the element. The spellcaster can then cast appropriate spell one time for the duration of the magic. Target should be one of the elements as per spell:
cold - frost shield acid - acid shield magic - repulsor aura air - aura of wind electric - lightning shield poison - shield of detoxification physical - armour of aether fire - flame shield