Bahalmuur

Beast inside. the Garguaths stat block changes to the evolved ones stat block

Spellcasting. Garguath has the spells of the evolved one but they deal an extra 1d8 per level

Action Name. Enter the description for your action.

Club: +5 to hit, reach 30 ft., 1 target. Hit: (3d4 + 1d12per level) blugening damage.

Claw: +5 to hit, reach 30 ft., 1 target. Hit: (3d4 + 2d4per level) slashing damage.

Ancient magic: +5 to hit, range 0/ 200 ft., 1 target. Hit:  (2d10 + 1d12 per level) radiant damage.

Reaction Name. Once per Fight Garguath can make a dex save the DC of the attack, if it passes the garguath takes half damage and full damage on a failed save

Evolved ones cant use legendary cations until level 5 and has actions equal to level that can be used as a bonus action. legendary actions are reset at dawn

multiattack (Costs 1 Actions). Garguath can make 1 club 1 claw and cast one spell with no cost

Ultimate magic (Costs 3 Actions). Garguath unleashes a mega Ancient magic blast that deals 2d20 per 5 levels radiant damage that  cant be reduced by imunities or resistances or doges or anything.

Elemental Cataclism (Costs 10 Actions). Garguath causes all allies to become immune to all damage and then roots itself into the ground and then causing gargantuan vines to shoot out of the ground (3 per enemy) that deal 1d100 damage to all creatures regarles of doges or AC. the garguath then reverts back into humanoid form and gains 1d4 (max 2) levels of exaustion