Crescridea - Nascent Goddess of Writing

Six Hands, No Blades. Her six arms never raise a weapon. Her hands only shape stone and water.

Mother of Amalgamations. Her amalgamations obey her telepathic commands (no action required) and act on her initiative count, immediately after her turn. No more than 6 amalgamations can exist at once, and no more than 1 of them can be a Scribed Jiant. When Crescridea dies, all of her amalgamations collapse into rubble.

Legendary Resistance (3/Day). If Crescridea fails a saving throw, she can choose to succeed instead. The effect is shed into an amalgamation within 30 feet, which collapses. If no amalgamation is within 30 feet, she can't use this trait.

Mold Life. Crescridea creates amalgamations in unoccupied spaces within 60 feet of her: two Scribed Phrogs or one Scribed Hewman. While she is Bloodied (127 HP or fewer), she can create one Scribed Jiant instead.

Rising Tide (Recharge 5–6). Strength Saving Throw: DC 19, each creature in a 30-foot Emanation originating from her. Failure: 33 (6d10) Bludgeoning damage, the creature is pushed 15 feet away and has the Prone condition. Success: Half damage only.

Shape the Ground (Bonus Action). A 20-foot square within 60 feet becomes Difficult Terrain until the end of her next turn, or she raises a stone wall segment 10 feet high, 10 feet long, and 1 foot thick (AC 15, 20 HP) that lasts until destroyed.

Legendary Action Uses: 3. Immediately after another creature's turn, Crescridea can expend a use to take one of the following actions. She regains all expended uses at the start of her turn.

Mimic Life (Cost 1). She creates one Scribed Phrog within 60 feet.

Earthshaper (Cost 1). She uses Shape the Ground.

Merge (Cost 2). Two amalgamations within 30 feet merge into one amalgamation of the next tier up (Phrogs into a Hewman, two Hewmans into a Jiant while she is Bloodied). The new amalgamation has the combined remaining HP of the two, up to its maximum.

Stone Embrace (Cost 3). Strength Saving Throw: DC 19, up to two creatures she can see within 30 feet. Failure: The creature has the Restrained condition and takes 11 (2d10) Bludgeoning damage at the start of each of its turns. It can repeat the save or make a DC 19 Strength (Athletics) or Dexterity (Acrobatics) check at the end of each of its turns, ending the effect on a success.