Yaga's Chaotic Grind

You conjure a massive iron mortar (roughly 4 feet across) and its matching pestle in an unoccupied space on the ground within range. The mortar immediately fills with a churning, bubbling slurry of crushed herbs, splintered bones, strange fungi, and glowing runes, while the pestle begins grinding of its own accord with an eerie, rhythmic thump. The mortar and pestle cannot be moved and vanish when the spell ends or when the final potion is withdrawn.

As a bonus action, you or a willing creature within 5 feet of the mortar can reach in and withdraw one dose of potion, contained in a small vial carved from a human femur (the vial and any unused potion vanish if you cast the spell again). When you withdraw a dose, roll a d20 and consult the Baba Yaga's Elixir Table below to determine which potion the mortar produces.

The mortar can produce a number of potions equal to your spellcasting ability modifier (minimum 1). When the last potion is withdrawn, the mortar and pestle vanish, ending the spell.

Baba Yaga’s Elixir Table (d20)

1. Potion of Eternal Crone – For 24 hours, you do not age, you gain 20 temporary hit points, and you have advantage on death saving throws.
2. Potion of Riddle Mind – For 1 hour, you have advantage on saving throws against being charmed or frightened and on all Intelligence (Investigation) and Wisdom (Insight) checks.
3. Potion of Cannibal Vitality – For 1 hour, whenever you reduce a creature to 0 hit points with a melee attack, you regain 2d6 hit points.
4. Potion of Agonizing Cackle – For 1 hour, you can use a bonus action to cackle at one creature you can see within 60 feet. It must succeed on a DC 15 Wisdom saving throw or be stunned until the end of its next turn. You can use this effect up to five times.
5. Potion of Bone Resilience – For 1 hour, you have resistance to cold, necrotic, and poison damage.
6. Potion of Crone’s Wisdom – For 1 hour, you have advantage on all Intelligence and Wisdom ability checks. 
7. Potion of Whispering Woods – For 1 hour, you can speak with beasts and plants (as speak with animals and speak with plants), and such creatures are friendly toward you.
8. Potion of Skull Sight – For 1 hour, you have darkvision out to 120 feet and can see invisible creatures and objects.
9. Potion of Chicken Stride – For 1 hour, your walking speed increases by 30 feet, you ignore difficult terrain, and you can stand up from prone using only 5 feet of movement.
10. Potion of Soaring Mortar – For 1 hour, you gain a flying speed of 40 feet.
11. Potion of Pestle Might – Your Strength score changes to 21 for 1 hour.
12. Potion of Iron Fangs – For 1 hour, you can use your action to make a bite melee weapon attack (reach 5 ft., one target, 1d8 piercing damage + your Strength modifier). The bite is magical.
13. Potion of Blue Rose Rejuvenation – You instantly regain 4d4 + 4 hit points and remove one level of exhaustion.
14. Potion of Voracious Appetite – For 1 hour, once per turn when you deal damage to a creature with a melee attack, you regain hit points equal to half the damage dealt.
15. Potion of Enchanted Broom – For 1 hour, you gain a flying speed of 30 feet.
16. Potion of Domovoi Aid – An unseen servant (as the spell) appears and obeys your commands for 1 hour.
17. Potion of Hut’s Step – For 1 hour, as a bonus action you can magically teleport up to 30 feet to an unoccupied space you can see (up to five times total).
18. Potion of Hag’s Guise – For 1 hour, you can alter your appearance at will exactly as the disguise self spell (no concentration required).
19. Potion of Clawed Grasp – For 1 hour, you have a climbing speed of 40 feet and your unarmed strikes deal 1d6 slashing damage + your Strength modifier.
20. Potion of Baba’s Wrath – For 1 hour, your melee weapon attacks deal an extra 1d6 necrotic damage. Once during the hour, you can use an action to touch a creature and curse it: the target has disadvantage on its next attack roll or saving throw.