With the fleet feet common to the wild elves, Aridha leaves the last Reaver to the others and runs around towards the wereboar. She doesn't close in for the kill though. Instead she looks up at the beam of light still lancing down from the moon and gives him a grim smile.
The beam moves, refocusing on its target. And this time, pinned between Dent and Aridha, there's noplace to run.
(Move to O10, and use action to move Moonray north one square to put him back in the AoE)
Con save DC 14 at disadvantage or take [roll0] radiant damage. Half on success.