Improved Grab (Ex): To use this ability, the mind flayer must
hit a Small to Large creature with its tentacle attack. If it
gets a hold, it attaches the tentacle to the opponents
head. A mind flayer can grab a Huge or larger creature, but only
if it can somehow reach the foes head. After a successful
grab, the mind flayer can try to attach its remaining tentacles
with a single grapple check. The opponent can escape with a
single successful grapple check or Escape Artist check, but the
mind flayer gets a +2 circumstance bonus for every tentacle that
was attached at the beginning of the opponents turn.
Extract (Ex): A mind flayer that begins its turn with all four
tentacles attached and successfully maintains its hold
automatically extracts the opponents brain, instantly
killing that creature.