Ethereal Jaunt. As a bonus action, the spider can magically shift from the Material Plane to the Ethereal Plane, or vice versa.
Spider Climb. The spider can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.
Web Walker. The spider ignores movement restrictions caused by webbing.
Multiattack. The Bone Widow makes three attacks, one bite and two leg attacks.
Bite. Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 7 (2d10 + 5) piercing damage, and the target must make a DC 15 Constitution saving throw, taking 27 (6d8) poison 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 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.
Leg. Melee Weapon Attack: +9 to hit, reach 10 ft. one target. Hit: 15 (3d6 + 5) bludgeoning damage.
Redirect Attack (Cost 1 Legendary action). The Bone Widow can use its reaction to manipulate webs to redirect a melee or ranged weapon attack to an other valid target.
Blink (Cost 2 Legendary actions). As a reaction the bone widow can move into the Ethereal Plane until the end of the current turn.
The Bone Widow can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The Bone Widow regains spent legendary actions at the start of its turn.
Bite (Cost 2 Legendary actions). Melee Weapon Attack: +9 to hit, reach 5 ft., one creature. Hit: 7 (2d10 + 5) piercing damage, and the target must make a DC 15 Constitution saving throw, taking 27 (6d8) poison 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 1 hour, even after regaining hit points, and is paralyzed while poisoned in this way.
Leg (Cost 1 Legendary action). Melee Weapon Attack: +9 to hit, reach 10 ft. one target. Hit: 15 (3d6 + 5) bludgeoning damage.
Puppet (Cost 1 Legendary action). The Bone Widow gives all of it's puppets an action, that they immediately take.
Blink (Cost 2 Legendary actions). The Bone Widow moves into the Ethereal Plane for 1d4 turns and moves half it's movement.
Lair and Lair Actions
Lair Actions
When fighting inside its lair, an Bone Widow can invoke the ambient magic to take lair actions. On initiative count 20 (losing initiative ties), the Bone Widow takes a lair action to cause one of the following effects (The Bone Widow can only use one of its puppeteer abilities at a time):
- Bind Foes. All foes within the lair must make a DC 15 Strength save or be Restrained by webbing. As an action, the Restrained target can make a DC 15 Strength check, bursting the webbing on a success. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage).
- Puppeteer Undead. The Bone Widow creates 1d4 Straid Skeletons (considered constructs, with no reactions) from the surrounds bones, they act on initiative 15 (losing initiative ties). The skeletons become incapacitated while the bone widow is in the Ethereal Plane.
- Summon Spiders. 1d4 Giant spiders emerge from the surrounding webs and secret places to aid their master.
- Puppeteer Living. Target must make a DC 18 strength check or be considered dominated as the Bone Widow uses its strong webs to try and control them. The target can make a DC 15 check check at the end of each other their turns. The webbing can also be attacked and destroyed (AC 10; hp 5; vulnerability to fire damage; immunity to bludgeoning, poison, and psychic damage). The domination ends if while the bone widow is in the Ethereal Plane.