burrow grub

Reform: as a free action when the creature is forced out of its target it reforms

Bite attack: +3 the creature makes one attack using its mouth and deals 2 d6 +3 of damage

Jump the creatue can jump half its movement speed in height. if it jumps at a target they must make a dc 13 dexterity saving throw or suffer a bite attack.

Split: on a successful lunge attack the grub splits into 4 smaller worms that burrow into a targets skin. If the  the target makes a constitution saving throw of 16 the smaller worms are forced out and reformed. on a failure the target if frightened for the next six rounds for every, the bite attack automatically hits for every round that the creature remains inside the target. the target must remake saving throws at the end of their turn for duration.