Censer of Air Elementals

While incense is burning in this censer, you
can use an action to speak the censer's
command word and summon an air elemental,
as if you had cast the conjure elemental spell.
The censer can't be used this way again until
the next dawn.
This 6-inch-wide, 1-foot-high vessel resembles
a chalice with a decorated lid. It weighs 1 pound.