Keen Smell. Thullen has advantage on Wisdom (Perception) checks that rely on smell.

Innate Spellcasting. Thullen's innate spellcasting ability is Charisma. It can innately cast the following spells, requiring no material components:

At will: detect magic, fog cloud, light

1/day each: control weather, gaseous form

3/day each: feather fall, fly, misty step, telekinesis

Spellcasting. Thullen is a 9th-level spellcaster. His spellcasting ability is Wisdom (spell save DC 15, +7 to hit with spell attacks). He has the following druid spells prepared:

Cantrips (at will): druidcraft, mending, produce flame

1st level (4 slots): cure wounds, entangle, thunderwave

2nd level (3 slots): animal messenger, barkskin, gust of wind

3rd level (3 slots): call lightning, conjure animals, speak with plants

4th level (3 slots): freedom of movement, grasping vine

5th level (1 slot): conjure elemental

Multiattack. Thullen makes two morningstar attacks.

Morningstar. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit:21 (3d8 + 8) piercing damage.

Rock. Ranged Weapon Attack: +12 to hit, range 60/240 ft., one target. Hit:30 (4d10 + 8) bludgeoning damage.