Special Equipment. Varram has the White Dragon Mask, a Staff of Thunder and Lightning, and an insignia of claws.

Draconic Majesty. While wearing no armor and wearing the White Dragon Mask, Varram adds his Charisma bonus to his AC (included).

Legendary Resistance (1/Day). If Rezmir fails a saving throw while wearing the Black Dragon Mask, she can choose to succeed instead.

Dragon Sight. Varram gains an additional 60 feet of darkvision. Once per day, Varram can gain [sense]blindsight[sense] out to a range of 30 feet for 5 minutes.

Dragon Tongue. Varram can speak and understand Draconic. He also has advantage on any Charisma check he makes against white dragons.

Winter’s Fury. While Varram's current hit points are equal to or less than half his hit point maximum, he deals an extra 1d8 cold damage with his melee attacks.

Dwarven Resilience. Varram has advantage on saving throws against poison, and he has resistance against poison damage.

Font of Magic. Varram has 8 sorcery points that he regains when he finishes a long rest. He can use these points to gain additional spell slots, or sacrifice spell slots to gain additional sorcery points. Varram can transform unexpended sorcery points into one spell slot as a bonus action on his turn.

Metamagic. Varram can twist his spells in two ways:

Heightened Spell

When he casts a spell that forces a creature to make a saving throw to resist its effects, he can spend 3 sorcery points to give one target of the spell disadvantage on its first saving throw made against the spell.

Twinned Spell

When he casts a spell that targets only one creature and doesn’t have a range of self, he can spend a number of sorcery points equal to the spell’s level to target a second creature in range with the same spell (1 sorcery point if the spell is a cantrip).

To be eligible, a spell must be incapable of targeting more than one creature at the spell’s current level.

Tempestuous Magic. As a bonus action, Varram can cause gusts of air to surround him before or after he casts a spell of 1st level or higher that allows him to fly up to 10 ft. without provoking opportunity attacks.

Heart of the Storm. Varram gains resistance to lightning and thunder damage, and whenever he starts casting a spell of 1st level or higher that deals lightning or thunder damage, creatures of his choice within 10 ft. of him take 4 lightning or thunder damage (his choice).

Storm Guide. Varram gains the ability to subtly control the weather around him. If it is raining, he can use an action to cause the rain to stop falling in a 20-ft.-radius (end as a bonus action). If it is windy, he can use a bonus action each round to choose the direction that the wind blows in a 100-ft.-radius sphere centered on him. The wind blows in that direction until the end of his next turn.

Spellcasting. Varram is an 8th-level spellcaster. His spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). Varram has the following sorcerer spells prepared:

Cantrips (at will): gust, frostbite, lightning lure, ray of frost, thunderclap, 

1st level (4 slots): chromatic orb, fog cloud, thunderwave, 

2nd level (3 slots): gust of wind, Snilloc's snowball swarm, warding wind, 

3rd level (3 slots): lightning bolt, sleet storm, 

4th level (3 slots): storm sphere, 

Staff of Thunder and Lightning. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit: 5 (1d6 + 4) bludgeoning damage.

This staff can be wielded as a magic quarterstaff that grants a +2 bonus to attack and damage rolls made with it. It also has the following additional properties. When one of these properties is used, it can't be used again until the next dawn.

Lightning. When you hit with a melee attack using the staff, you can cause the target to take an extra 2d6 lightning damage.

Thunder. When you hit with a melee attack using the staff, you can cause the staff to emit a crack of thunder, audible out to 300 feet. The target you hit must succeed on a DC 17 Constitution saving throw or become stunned until the end of your next turn.

Lightning Strike. You can use an action to cause a bolt of lightning to leap from the staff's tip in a line that is 5 feet wide and 120 feet long. Each creature in that line must make a DC 17 Dexterity saving throw, taking 9d6 lightning damage on a failed save, or half as much damage on a successful one.

Thunderclap. You can use an action to cause the staff to issue a deafening thunderclap, audible out to 600 feet. Each creature within 60 feet of you (not including you) must make a DC 17 Constitution saving throw. On a failed save, a creature takes 2d6 thunder damage and becomes deafened for 1 minute. On a successful save, a creature takes half damage and isn't deafened.

If he is wearing the White Dragon Mask, Varram can take up to two legendary actions between each of his turns, taking the actions all at once or spreading them over the round. A legendary action can be taken only at the start or end of a turn. Varram has the following legendary action options, some of which expend more than one action when taken:

2 Actions. A 20-foot radius, 40-foot high cylinder of hail and rock-hard ice (as if the ice storm spell has been cast) slams to the ground centered on a point Varram can see within 300 feet of him. Each creature in the cylinder must make a DC 13 Dexterity saving throw. A creature takes 2d8 bludgeoning damage and 4d6 cold damage on a failed save, or half as much damage on a successful one. Hailstones turn the storms area of effect into difficult terrain until the end of Varram's next turn.

1 Action. Varram makes one melee attack.

1 Action. Varram takes a draught from a hip flask, restoring 4d4+8 hit points.