Quote from CopperDragon1421 >>

 Hey, I love this! It fits beautifully, not overshadowing hold person (as it shouldn't) yet providing an interesting option. The fact that it's a Strength saving throw means that it is instantly unique from many other spells, and the restrained condition is not overly powerful. I think that the thing that sets it apart is how an opponent can end the effect by burning a reaction, something that is normally so trivial in the action economy, however thinking about how it deprives them of an opportunity attack means this spell is situationally phenomenal. An allied caster cornered by a dextrous melee opponent? They'll probably fail the save (even if they don't, you have a bit of damage to help out your teammate), even if they just escape immediately, your caster can run away without fear of a deadly opportunity attack. Or you can wait until someone has already used their opportunity attack to have a great long range restrain. Great job with this!

 Thanks! I appreciate it!

maybe dumb it down a bit like 2d6

Quote from Vaprak_The_Destroyer >>

maybe dumb it down a bit like 2d6

 Nah str saves are easy to succeed on and 1/2 of 3d6 (5.25 average) is really low. Yet radiant damage is rare for a resistance or an immunity.