Liriel’s Binding Chains

4th-level Conjuration

Casting Time: 1 Action
Range: 30 feet
Components: V, S
Duration: 10 minutes (Concentration)

When you cast this spell choose one 5 foot square within range. Create a 15 foot square centered on target square, this area counts as difficult terrain, caster is immune to this effect.

Whenever a humanoid enters this area for the first time and ends his turn in it must make a Strength save. On a failed save target becomes restrained. Target may use an Action to attempt a Strength save or a Dexterity save with disadvantage to end this effect.
Caster can as an action issue a command to chains to complete simple actions listed below:
Disarm: Restrained humanoids by the spell must do a Strength save or be disarmed their weapons, shields handheld items drop up to 10 feet away in random direction.
Secure bonds: Caster describes the exact way she wants a target bound by spell. This may take almost any form caster desires. Effect of this is that restrained target has to do a Strength save or until end of the spell to have disadvantage on all saves and checks.