Chain of Binding Light

Summon a chain of light to restrain a selected target within range.
If the target is a creature it must make a Dexterity Saving Throw in order to escape. 
Upon failure, the target is then Restrained until it succeeds in its next saving throw.
If two or more chains are used on a single target, the target has Disadvantage when attempting to break free (the initial saving throw does not apply disadvantage).

When you cast this spell using a spell slot of 2nd level or higher, create additional chains for each spell slot above 1st level.