Avatar of Skadi

Arbiter’s Shield. At the start of every combat, attack rolls against Skadi have disadvantage before the start of her first turn, provided Skoldur Vennstein is on her person.

Aura of Dreams. When a creature starts its turn within 30 feet of Skadi and can see Skoldur Vennstein, it must succeed on a DC 22 Wisdom saving throw or be charmed by Skadi for 1 minute. While charmed in this way, the creature has a speed of 0 and is incapacitated, descending into a dreamy stupor. The creature repeats the saving throw at the end of each of its turns, ending the effect on a success. If a creature succeeds on this saving throw or the effect ends for it, it is immune to Skadi’s Aura of Dreams for the next 24 hours.

Earth Glide. Skadi can move across difficult terrain made of earth or stone without spending extra movement. Additionally, Skadi can burrow through earth and stone. While doing so, Skadi doesn't disturb the material she moves through.

Innate Spellcasting. Skadi’s innate spellcasting ability is Charisma (spell save DC 22). She can innately cast the following spells, requiring no material components:

At will: wall of stone

3/day each: maximilian’s earthen grasp stone shape, transmute rock

1/day each: earthquake, move earth

Legendary Resistance (3/day). If Skadi fails a saving throw, she can choose to succeed instead.

Magic Resistance. Skadi has advantage on saving throws against spells and other magical effects.

Magic Weapons. Skadi’s weapon attacks are magical.

Regeneration. Skadi regains 20 hit points at the start of her turn. If she takes thunder damage, this trait doesn't function at the start of her next turn. Skadi dies only if she starts her turn with 0 hit points and doesn't regenerate.

Special Equipment. Skadi wields a dragon slayer longsword called Wyrmslayer and a shield, +3 called Skoldur Vennstein.

Stone Camouflage. Skadi has advantage on Dexterity (Stealth) checks made to hide in rocky terrain.

Multiattack. Skadi makes three attacks with Wyrmslayer.

Wyrmslayer. Melee Weapon Attack: +16 to hit, reach 20 ft., one target. Hit: 26 (4d8 + 8) slashing damage or 30 (4d10 + 8) slashing damage if wielded with two hands. If the target is a dragon, it takes an additional 42 (12d6) slashing damage.

Petrifying Touch. Skadi touches one Large or smaller creature within 10 feet of herself that is charmed by it. The target must make a DC 22 Constitution saving throw. On a failed save, the target becomes petrified, and Skadi can adhere the target to her stony body. Greater restoration spells and other magic that can undo petrification have no effect on a petrified creature on the avatar unless the avatar is dead, in which case the magic works normally, freeing the petrified creature as well as ending the petrified condition on it.

Rock (Recharge 5-6). Skadi throws a 10 foot diameter rock that travels for 120 feet in a direction of her choice. Each creature in the rock’s path must make a DC 23 Dexterity saving throw. On a failed save, a creature takes 91 (14d12) bludgeoning damage and be knocked prone. On a successful save, a creature takes half as much damage and isn’t knocked prone.

Earthen Armor (1/day). Skadi gains 37 temporary hit points which last for up to one hour. While any of these temporary hit points remain, she has immunity to all bludgeoning, piercing, and slashing damage.

Rock Catching. If a rock or similar object is hurled at Skadi, she can, with a successful DC 10 Dexterity saving throw, catch the missile and take no bludgeoning damage from it.

Skoldur Vennstein (Recharges after a Short or Long Rest). When a creature within 10 feet of Skadi would be hit by an attack, she can make herself the attack’s target. If the attack still hits, Skadi has resistance to the attack’s damage.

Skadi 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. Skadi regains spent legendary actions at the start of her turn.

Attack. Skadi makes an attack with Wyrmslayer.

Move. Skadi moves up to half her speed.

Fling (Costs 2 Actions). Skadi makes an attack with Wyrmslayer. On a hit, she pushes the target up to 60 feet away from herself horizontally or vertically in a direction of her choice

Spell (Costs 2 Actions). Skadi casts a spell using her Innate Spellcasting trait.

Trembling Strike (Costs 2 Actions). Skadi strikes the ground with Wyrmslayer, triggering an earth tremor. All other creatures on the ground within 60 feet of her must succeed on a DC 23 Strength saving throw or be knocked prone.