Yuan-ti Malison Type 1Medium monstrosity (shapechanger yuan ti)
Magic Resistance. The yuan-ti has advantage on saving throws against spells and other magical effects.
Malison Type. The Yuan-ti has one of the following types:
Type 1: Human body with snake head
Type 2: Human head and body with snakes for arms
Type 3: Human head and upper body with a serpentine lower body instead of legs
Type 4: Human form with one or more serpentine tails
Type 5: Human form covered in scales
Spellcasting (Yuan-ti form only). The yuan-ti malison type 1’s spellcasting ability is Charisma (spell save DC 13, +5 to hit with spell attacks). It has 3 mana, a mana limit of 1, regains all expended mana when it finishes a long rest and regains half its total mana (rounded up) when it finishes a short rest. It knows the following spells:
At will: animal friendship (snakes only)
Cantrips (at will): poison spray
Variant: Chameleon Skin. The yuan-ti has advantage on Stealth checks made to avoid being noticed.
Variant: Shed Skin (1/long rest). Once on its turn, the yuan-ti can shed its skin to free itself from a grapple, shackles, or other restraints. If the yuan-ti spends 1 minute eating its shed skin, it regains health equal to half its maximum health.
Bite (1/turn). Melee Weapon Attack: +5 to hit, reach 1 m. Hit: 5 (1d4 + 3) piercing damage plus 7 (2d6) poison damage.
Scimitar (Yuan-ti form only). Melee Weapon Attack: +5 to hit, reach 1 m. Hit: 6 (1d6 + 3) slashing damage.
Dagger (Yuan-ti form only). Melee or Ranged Weapon Attack: +5 to hit, reach 1 m. or range 3/10 m. Hit: 5 (1d4 + 3) piercing damage.
Longbow (Yuan-ti form only). Ranged Weapon Attack: +4 to hit, range 20/200 m. Hit: 6 (1d8 + 2) piercing damage plus 3 (1d6) poison damage.
Change Shape (1/turn). The yuan-ti can polymorph into a Medium snake, or back into its true form. Its statistics are the same in each form. Any equipment it is wearing or carrying isn’t transformed. It doesn’t change form if it dies.
Variant: Acid Slime (1/turn). The yuan-ti can coat its body in a slimy acid that lasts for 1 minute. A creature that touches the yuan-ti, hits it with a melee attack while within 1 meter of it takes 11 (2d10) acid damage.
Variant: Snake Antipathy (Recharge 6). The yuan-ti targets a creature it can see within 10 meters of it. The target must succeed on a Wisdom saving throw or feel an intense urge to avoid snakes and snakelike creatures (including yuan-ti); as if affected by the antipathy spell. The save DC is 13.
No concoctions, maneuvers, or spells
All monsters in this system should have maneuvers or spells. You should add some maneuvers or spells to this monster. If you do so, please make a suggestion on github so I can finish adding maneuvers and spells to all monsters via https://github.com/mlenser/kryx-rpg-issues/issues/9