Prickly Pear [MAJOR]
Bony spurs or chitinous spikes protrude from your joints, giving you a jagged profile and making you dangerous to grapple.
MP Cost: 4.
Benefits: You deal 1d4 points of piercing damage to any creature you are grappling or any creature that grapples you. Furthermore, you deal 1d4 points of piercing damage per round to any creature that swallows you using the swallow whole ability.