Ethereal Orb

A medium or smaller creature or object of you touch is placed inside a small ethereal orb. The orb is a half inch in diameter, its weight is equivalent to the weight of its contents divided by ten, and it can be held and moved freely. If it contains a creature, that creature can make a wisdom or strength saving throw against your spell save DC to break free of the orb if it so chooses. This is the only action a creature inside the orb may take. Otherwise, the orb remains indefinitely. A creature within the orb takes 5d10 force damage for every half hour it spends inside. You can dispel the orb with an action.