Cloud Giant

Huge Giant, Neutral

AC 14     Initiative +4 (14)
HP 200 (16d12 + 96)
Speed 40 ft., Fly 20 ft. (hover)

Ability Scores
STR 27 (+8) Save +8    DEX 10 (+0) Save +0    CON 22 (+6) Save +10
INT 12 (+1) Save +1    WIS 16 (+3) Save +7    CHA 16 (+3) Save +3

Skills Insight +7, Perception +11
Senses Passive Perception 21
Languages Common, Giant
CR 9 (XP 5,000; PB +4)

Actions
Multiattack. The giant makes two attacks, using Thunderous Mace or Thundercloud in any combination. It can replace one attack with a use of Spellcasting to cast Fog Cloud.
Thunderous Mace. Melee Attack Roll: +12, reach 10 ft. Hit: 21 (3d8 + 8) Bludgeoning damage plus 7 (2d6) Thunder damage.
Thundercloud. Ranged Attack Roll: +12, range 240 ft. Hit: 18 (3d6 + 8) Thunder damage, and the target has the Incapacitated condition until the end of its next turn.
Spellcasting. The giant casts one of the following spells, requiring no Material components and using Charisma as the spellcasting ability (spell save DC 15):
At Will: Detect Magic, Fog Cloud, Light
1/Day Each: Control Weather, Gaseous Form, Telekinesis

Bonus Actions
Misty Step. The giant casts the Misty Step spell, using the same spellcasting ability as Spellcasting.