Denizen of the Mist. During its turn, the fog giant ignores the effects of fog cloud spells cast by it or other allied fog giants.
Keen Smell. The giant has advantage on Wisdom (Perception) checks that rely on smell.
Innate Spellcasting. The giant's innate spellcasting ability is Charisma. It can innately cast the following spells, requiring no material components:
At will: detect magic, fog cloud, light
3/day each: feather fall, misty step
Multiattack. The giant makes two greatsword attacks and casts fog cloud.
Greatsword. Melee Weapon Attack: +12 to hit, reach 10 ft., one target. Hit:29 (6d6 + 8) slashing damage.
Rock. Ranged Weapon Attack: +12 to hit, range 60/240 ft., one target. Hit:30 (4d10 + 8) bludgeoning damage.
Petty Tyrant (Recharge). The fog giant shouts bloodcurdling threats at the creatures that serve it. Each medium or smaller ally of the giant within 120 feet of it that can see or hear it can use its reaction to make a melee attack.
The place of cloud giants in the ordning—the set of values and expectations that determines their rank in giant society—is driven by wealth. Those cloud giants foolish or unlucky enough to have their treasure plundered fall to the bottom of the ordning, becoming outcasts known as fog giants. Cut off from their proper place in society, they become raiders and marauders who seek to reclaim their treasure or start a new hoard—by any means possible.