Brimskada, Forgecaller

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

Fire Rune. Brimskada has a fire rune inscribed on a medallion or some other object in her possession. While holding or wearing the object bearing the rune, Brimskada can use her Magma Wave action and Furnace Armor bonus action.

The object bearing the rune has AC 15; 40 hit points; and immunity to necrotic, poison, and psychic damage. The object regains all its hit points at the end of every turn, but it turns to dust if reduced to 0 hit points or when Brimskada dies. If the rune is destroyed, Brimskada can inscribe a fire rune on an object in her possession when she finishes a short or long rest.

Multiattack. Brimskada makes three Ild Greatsword attacks or one Ild Greatsword attack and one Flaming Gibbots attacks.

Ild Greatsword. Melee Weapon Attack: +13 to hit, reach 10 ft., one target. Hit: 24 (5d6 + 7) slashing damage. Hit or Miss: Brimskada can cause the greatsword to emit a burst of heat in a 30-foot-radius sphere centered on the target. Metal objects in that area glow red-hot until the start of Brimskada's next turn. Any creature in physical contact with a heated object at the start of its turn must make a DC 19 Constitution saving throw. On a failed save, the creature takes 10 (3d6) fire damage and has disadvantage on attack rolls until the start of its next turn unless it has immunity to fire damage. The greatsword can emit heat in this way only once per turn.

Flaming Gibbots. Brimskada smashes her flaming gibbots into the ground, at a point within a range of 15 ft. Each creature within a 10 ft. of that point must make a DC 21 Dexterity saving throw or take 23 (3d10 + 7) bludgeoning damage plus 10 (3d6) fire damage. On a successful save, the creature still takes half of the fire damage.

The area is set on fire for one minute, and a creature that starts its turn within it must make a DC 19 Dexterity saving throw or take 10 (3d6) fire damage. On a successful save, the creature still takes half of the fire damage.

Magma Wave (Requires Fire Rune). Brimskada emits a wave of magma from her fire rune at a point of her choosing within 60ft, in a 30-foot cone. Each creature in that area must make a DC 19 Dexterity saving throw. On a failed save, a creature takes 36 (8d8) fire damage and is restrained. As an action, a creature can make a DC 19 Strength Athletics check, freeing itself or a creature within its reach from the rock on a success. The rock restraining each creature has AC 17; 20 hit points; and immunity to fire, poison, and psychic damage. On a successful save, a creature takes half as much damage only.

Furnace Armor (Requires Fire Rune). The giant causes smoke and cinders to billow from its armor, filling a 30-foot-radius sphere centered on the giant. While the armor is billowing smoke, the giant has half cover. The armor stops billowing smoke after 1 minute, when the giant dies, when the giant uses a bonus action to end the effect, or when the giant’s fire rune is destroyed.

Brimskada 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. Brimskada regains spent legendary actions at the start of its turn.

Retreating Strike. Brimskada swings her greatsword in a wide arc, and moves up to half her movement speed in a direction of her choosing. Any creature caught in the 15ft cone must make a DC 21 Dexterity saving throw or take 24 (5d6 + 7) slashing damage, and they cannot perform attacks of opportunity against Brimskada during her movement.

Searing Streak. Brimskada drags her flaming gibbots across a 20 ft. line in front of her, at a maximum range of 15 ft. The gibbots leave behind lingering flames in the area, and each creature that enters the area or starts its turn there must make a DC 19 Dexterity saving throw or take 10 (3d6) fire damage. On a successful save, the creature still takes half of the fire damage.

Blazing Leap. (Costs 2 Actions). Brimskada conjures an eruption of lava beneath her feet, launching her in an arc through the air to a point within 60ft of her choosing. She lands violently, cracking the ground beneath her and creating difficult terrain in a 20ft radius. Any creature she lands on must succeed on a DC 15 Dexterity saving throw or take 21 (6D6) bludgeoning damage.