Inexorable

You imbue yourself with the resilience of the cave worm. When you gain the Paralyzed, Slowed, or Stunned 1 condition, roll a DC 15 flat. On a success you ignore the condition.

When using Worm Form you are immune to penalties to your Speed and the Immobilized condition, you gain a +2 circumstance bonus to your Fortitude or Reflex DC against attempts to Shove or Trip you, and you ignore difficult terrain and greater difficult terrain.