Crocheted shadows

As an action, you can crochet the shadows of two creatures within reach together. Both must make an charisma saving throw. Upon failure both cannot move away from each other as their shadows are now magically connected. They can move towards each other. You can also crochet the shadow of a creature to a shadow of an object, the object automatically failing its saving throw. If one creature or the object moves, thereby moving the shadow, the other creature must make a strength saving throw or be moved as well. 

At the end of its turn the creature can repeat its saving throw, ending the spell upon saving. The spell also ends after one minute or in absolute darkness.The influenced shadows are also considered magical for the duration of the spell. They are immune to non magical light or light emiting cantrips but a daylight spell or any above can destroy the shadows thus ending the spell.