As the all powerful Archaic Bard Zan is, he creates spells form now and then,if not magic items, or trying to conquer the universe. He made this spell to move things to powerful to move it by force.

You take your hand out as a shadow cage comes out and wacks the target, the target must make and Intelligence Saving throw of 18 or higher. On a successful saving throw the target takes 4d6 Psychic damage. On a failed Saving throw the target is captured and the spell caster can release it when they feel the need so. You can only capture one creature at a time. You can capture a creature of tiny to Large sized.

When casting at higher levels, at 7th and 8th levels you can capture a creature of Huge size, at 9th level you can capture a creature of Gargantuan size.