Chthonian worm-rider

Chthonian worm-rider [LVL 5]
This is a Chthonian officer mounted on a large (10-15 metres)
worm with a triangle-shaped head.
I'm outta here: When a worm no longer has a rider, it returns
to the depths of the earth.
H Charge (DEX): 8
H Devour (DEX or STR): 5 damage per turn until the target
succeeds at a STR roll (or finds another way out of the crea-
ture's maw).