Bead of Force

As an action, throw the bead up to 60 ft. It
explodes on impact. Each creature within 10 ft of
where the bead explodes makes a DC 15 Dex save
or take 5d4 force damage. A sphere of transparent
force then encloses the area for 1 minute. A
creature that failed to save within the area is
trapped inside. Only breathable air can pass the
sphere's wall. No attack or other effect can.
An enclosed creature can push at the sphere's wall
moving up to half the creature's speed. The sphere
can be picke