You can detach your head and move around using it instead of your body, when you detach your head your size becomes small and with all items still on your body, you can still grab items and you can attach yourself to one creature within a 10 ft area of you, dealing damage to the creature you attach to.

The Ram rune grants its wielder the power to slam its body quickly downward at high velocity and grants them the strength to break through weak surfaces.

You can stick yourself to a wall indefinitely, giving you a climbing speed of 15 ft.

When there are enemies within a 50 ft radius of the Beheaded, they slowly are on a timer to their death. The Beheaded becomes instantly aware of the timer beginning and the timer takes 1 hour to effect them.

you gain abilities due to your mutations

Point Blank: Ranged attacks have advantage

Soldier's Resistance: Increases your health by 1d12

Ygdar Orus Li Ox: you gain proficiency on death saving throws

You gain +2 in each stat