Phase Spider

The Phase Spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.

The Phase Spider ignores movement restrictions caused by webbing.

+4 to hit, reach 5 ft. Hit: 7 (1d10 + 2) piercing damage. The target must make a saving throw, taking damage on a failed save, or half as much damage on a successful one. If the poison damage reduces the target to 0 hit points, the target is stable but poisoned for , even after regaining hit points, and is paralyzed while poisoned in this way.

As a bonus action, the Phase Spider can magically shift from the Material Plane to the Ethereal Plane, or vice versa.