Woodweave Caterpillar
CREATURE 12Bristles only. The woodweave caterpillar gains an extra reaction at the start of each of its turns that it can use only to make a Reactive Strike. It can't use more than one Reactive Strike triggered by the same action. In addition to the normal trigger, the caterpillar can make a Reactive Strike against a creature that touches it or an adjacent creature that attempts a melee Strike against it.
On a critical hit with a bristles Strike, a woodweave caterpillar's bristles lodge in the target's body, causing severe pain and blood loss. They deal 3d6 bleed damage, and the target is Off-Guard as long as the persistent damage continues.
Medium or Smaller, foot, DC 32 basic Reflex
The monster Strides up to double its Speed and can move through the spaces of creatures of the listed size, Trampling each creature whose space it enters. The monster can attempt to Trample the same creature only once in a single use of Trample. The monster deals the damage of the listed Strike, but trampled creatures can attempt a basic Reflex save at the listed DC (no damage on a critical success, half damage on a success, double damage on a critical failure).