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The Green Lady is an ancient green dragon, with the following changes:
- She has an Intelligence score of 30 (+10).
- She speaks all languages.
- She has the shapechanger tag.
- She gains the Innate Spellcasting and Spellcasting traits, the Change Shape action, the At-Will Spell and Cast a Spell legendary actions, and the Dracogenius lair action, as described below.
Innate Spellcasting. The Green Lady's innate spellcasting ability is Charisma (save DC 19, +11 to hit with spell attacks). The Green Lady can innately cast the following spells, requiring no material components:
At will: gust, poison spray (as a 20th-level character), thaumaturgy
3/day each: dominate person, plant growth, suggestion, wall of thorns
Spellcasting. The Green Lady is a 20th-level spellcaster. Her spellcasting ability is Intelligence (spell save DC 25, +17 to hit with spell attacks). The Green Lady knows all wizard spells, and can and does change her list of prepared spells from day to day. Below is an example spell list for a given day:
Cantrips (at will): green-flame blade, mage hand, mending, message, prestidigitation
1st level (at will): detect magic, expeditious retreat, shield, silent image
2nd level (at will): blur, darkness, detect thoughts, gust of wind, hold person
3rd level (at will): counterspell, dispel magic, major image, nondetection, slow
4th level (4 slots): banishment, black tentacles, dimension door, greater invisibility
5th level (4 slots): arcane hand, dream, mislead, scrying, wall of stone
6th level (3 slots): globe of invulnerability, mass suggestion, true seeing
7th level (3 slots): reverse gravity, simulacrum, teleport
8th level (2 slots): antimagic field, feeblemind
9th level (2 slots): time stop, true polymorph
Change Shape. The dragon magically polymorphs into a humanoid or beast that has a challenge rating no higher than its own, or back into its true form. It reverts to its true form if it dies. Any equipment it is wearing or carrying is absorbed or borne by the new form (the dragon's choice).
In a new form, the dragon retains its alignment, hit points, Hit Dice, ability to speak, proficiencies, Legendary Resistance, lair actions, and Intelligence, Wisdom, and Charisma scores, as well as this action. Its statistics and capabilities are otherwise replaced by those of the new form, except any class features or legendary actions of that form.
At-Will Spell. The Green Lady casts one of her at-will spells with a casting time of 1 action or less.
Cast a Spell (Costs 3 Actions). The Green Lady casts a spell of 4th level or higher with a casting time of 1 action or less.
Dracogenius. The Green Lady rolls a d6 and adds 2 to the result. She then regains a spell slot of that level or lower (minimum of 4th level).