I think it suits the description of how Conjurers..conjure their spells.

Conjury calls upon elemental forces present in nature and concentrates them to a potency at which spells can be weaved. Through practiced meditation on the essences of creation, conjurers draw forth and absorb aether from their immediate surroundings. A wand or cane made from unworked wood is then utilized to focus the aether until it manifests as the desired spell.