and 17th level (4d6).
the sound of an animal
6-Goliath
or form a pillar. The extent of any such changes can't exceed half the area's largest dimension. It takes 10 minutes for these changes to complete. At the end of every 10 minutes you spend concentrating on the spell
3-Overcast or ground fog
in which case you must speak the creature's name. The creature then appears in an unoccupied space you choose within 10 feet of you.