Summon an Air, Earth, Fire, or Water Elemental spirit that lasts 1 hour (Concentration). It uses your spell attack modifier, obeys commands, and appears in an unoccupied space you can see. Higher Slot: the elemental's maximum HP increases by 10 per slot level above 4.

Material: a mote of air, earth, fire, or water inside a gilded acorn worth 400 gp