@ChrisPerkinsDnD would a shambling mound let a will o wisp hit it to absorb the Lightning dmg or would the wisp have to make a atk roll?
— Wait…What? (@davoerlo) November 7, 2016
The mound might be attracted to the wisp and consider it an ally of sorts. No attack roll req'd. #WOTCstaff https://t.co/XLzSDxbkwe
— Christopher Perkins (@ChrisPerkinsDnD) November 7, 2016
Both, It would love 2-3 wisps blasting away, but they still have to hit it.