b'Mavka \n'b'  Medium   undead ,  chaotic evil  \n'b'  Armor Class  17 (natural armor)  Hit Points  170 (20d8 + 80)  Speed  30 ft.\n'b' STATS STR: 20 (+5) DEX:  15 (+2)  CON:  18 (+4)  INT:  13 (+1)  WIS:  13 (+1)  CHA:  18 (+4)  \n'b'\n'b'\n'b'\n'b'\n'b'\n'b'\n'b'  Saving Throws   Str  +9,  Dex  +6,  Con  +8,  Cha  +8  Skills   Athletics  +9,  Nature  +5,  Perception  +5  Damage Resistances  fire; bludgeoning, piercing, and slashing from nonmagical attacks  Damage Immunities  necrotic, poison  Condition Immunities   poisoned   Senses   darkvision  90 ft., passive  Perception  15  Languages  Abyssal, Common, Infernal, Sylvan  Challenge  12 (8,400 XP)  Proficiency Bonus  +4 \n'b' SPECIAL TRAITS \n'b'\n'b'  Mounted Warrior . While the mavka is mounted, her mount can\xe2\x80\x99t be  charmed  or  frightened . \n'b'  Nightmare Mount . The mavka has formed a bond with a  nightmare . The nightmare acts as a controlled mount while carrying the mavka, obeying the mavka\xe2\x80\x99s spoken commands. Mounting and dismounting the nightmare costs the mavka only 5 feet of movement. \n'b'  Sunlight Hypersensitivity . The mavka takes 20 radiant damage when she starts her turn in sunlight. While in sunlight, she has disadvantage on attack rolls and ability checks. \n'b'  Undead Nature . The mavka doesn\xe2\x80\x99t require air, food, drink, or sleep. \n'b'\n'b' ACTIONS \n'b'\n'b'  Multiattack . The mavka makes two Enervating Slam attacks or three Necrotic Bolt attacks. If she is riding a  nightmare , the nightmare can then make one Hooves attack. If both Enervating Slam attacks hit one creature, the mavka regains hp equal to the total necrotic damage dealt by both attacks. \n'b'  Enervating Slam .  Melee Weapon Attack : +9 to hit, reach 5 ft., one target.  Hit : 23 (4d8 + 5) bludgeoning damage plus 16 (3d10) necrotic damage. \n'b'  Necrotic Bolt .  Ranged Spell Attack : +8 to hit, range 60 ft., one target.  Hit : 26 (4d10 + 4) necrotic damage. \n'b'  Flame Burst (Recharge 5\xe2\x80\x936) . While riding a  nightmare , the mavka channels her power into her mount, causing its fiery light to burn those nearby. Each creature within 20 feet of the mavka must make a DC 16  Dexterity  saving throw, taking 54 (12d8) fire damage on a failed save, or half as much damage on a successful one. \n'b'  Spellcasting . The mavka casts one of the following spells, requiring no material components and using  Charisma  as the spellcasting ability (spell save DC 16):\n'b'\n'b'\n'b'  At will :  create or destroy water ,  dancing lights  \n'b'  3/day each :  darkness ,  hold person ,  silence  \n'b'  1/day each :  bestow curse ,  dispel magic  \n'b'\n'b' ABOUT \n'b' With burnt and blackened skin, burnt twigs for hair, and clawed hands and feet that resemble burnt and twisted roots, this creature appears scorched and even frail. Pupilless red eyes gleam in its sockets with a hellish green flame. \n'b' Mavkas are twisted dryads created by undead warlocks and vampiric experiments. \n'b'  Death Riders . Mavkas ride nightmares and are fearsome raiders, snatching victims up into the saddle, never to be seen again. They despise and trample foot soldiers as peasants unworthy of attention. \n'b'  Hag Killers . Mavkas are the mortal enemies of red hags, who call these undead horrors \xe2\x80\x9cgreenbanes.\xe2\x80\x9d When red hag covens discover vampires and other undead turning local dryads into mavkas, they go on a rampage, destroying all undead they encounter.'