The Maiden

You have been made a pact with the lady of icy vengence, the Maiden. The Maiden is a cursed spectre of dispair who wanders the etherial plane, unable to completly break their tether to the material world. A Maiden is said to appear to those on the brink of death whos heart is consumed by revenge, others say the maiden appears to travellers hopelessly lost in the depths of winter; offering salvation in exchange for revenge on those who have wronged her. The most famous and powerful of the Maidens is said to be Yuki Onna, a spirit consumed with icy regret. 

Expanded Spell List

The Maiden lets you choose from an expanded list of spells when you learn a warlock spell. The following spells are added to the warlock spell list for you.

Fiend Expanded Spells

Spell Level	Spells
1st	ice knife, fog cloud
2nd	snilloc's snowball swarm, see invisibility
3rd	sleet storm, blink
4th	ice storm, resilient sphere
5th	cone of cold, control winds

Last Gasp

Starting at 1st level, When you reduce a hostile creature to 0 HP, you can invoke The Maiden to corrupt its final breath, transforming their soul into an unstable spectre. The unstable spectre will immediately move the closest hostile creature within 30ft of its original body. The unstable spectre will then shatter into ice shards dealing cold damage equal to your charisma bonus + half your warlock level (minimum of 1). If their are no enemies within 30ft for the specture to attack, it will instead instantly shatter, causing no damage.

Creeping Frost

Starting at 6th level, Once per turn when you inflict cold damage to a creature, that creature rolls a constitution saving throw. On a failure their max speed is halved until the end of their next turn as their legs are encrusted in ice. A flying creature who's speed is already reduced will be unable to maintain flight and will fall from the sky, taking fall damage. The impact will break the ice and their speed will be restored to full at the start of that creatures next turn.  

Iceborn

Starting at 10th level, You gain resistance to cold damage and you ignore all effects of rough terrain caused by ice, snow or frost. In addition, you are more adapted to alpine and harsh cold climates. 

Winters Wrath

Starting at 14th level, you can use this feature to, as an action, choose an unnocupied space within 30ft. You summon the spectral visage of The Maiden from the etherial plane. A zone of absolute zero extends in a 20ft radius from the maiden and the ground is instantly frozen. Any creature (except for you) caught in the radius will suffer 2d8 cold damage for every 5ft of movement they use within the zone.

As a bonus action you may move the maiden 10ft. If a creature is caught in the radius at the end of their turn they make a constitution saving throw. On a failure they suffer one point of exhaustion. 

Once you use this feature, you can’t use it again until you finish a long rest.