Dire Centipede

Spider Climb. The centipede can climb even on difficult surfaces and upside down on ceilings.

Bite. Melee Weapon Attack: +4 to hit, reach 5 ft., one target. Hit: 4 (1d4 + 2) piercing damage and the target makes a DC 11 Constitution saving throw. On a failure the target takes 10 (3d6) poison damage and is poisoned for 1 minute. The target is paralyzed while poisoned in this way. The target repeats the saving throw at the end of each of its turns ending the effect on a success.