We have a large character with a huge arm (due to a template he added). He brought up about wanting to grab somebody by the head and perform a skull crush. How should this be worked and what would the DC's and checks be set at? I'm new here, so sorry if this has already been answered...I cannot seem to locate a search function for the website. Any and all feedback is appreciated. Also, the character is a barbarian with a lot of strength so we thought it MIGHT at least be possible.