Crowned Stone Giant (Rapier)

Stone Camouflage. The giant has advantage on Dexterity (Stealth) checks made to hide in rocky terrain.

Cursed Crown. The giant makes a DC 18 WIS saving throw every minute as long as the crown remains on their head. On a Failure, the giant obeys any commands given by the Crown's Curser, these orders typically being to kill anything without a crown, or put a crown on any Giant without one. On a Success, the giant acts as they see fit, typically attempting to take the crown off to no avail. The crown can only be permanently removed by a Dispel Magic or Remove Curse spell. In either case, treat the crown as though it was cursed by a level 9 spell. 

Lagged Perception. The Giant, as long as it is wearing the crown, cannot react to anything actively until one round after it happens. For an example, the Giant, already in combat with one party member, is attacked by another, who stands close to it. The Giant acts as though the extra party member is not there until the next round. 

Multiattack. The giant makes two Rapier attacks.

Rapier. Melee Weapon Attack: +8 to hit, reach 15 ft., one target. Hit: 18 (3d8 + 5) piercing damage.

Rock. Ranged Weapon Attack: +7 to hit, range 60/240 ft., one target. Hit: 26 (4d10 + 4) bludgeoning damage. If the target is a creature, it must succeed on a DC 17 Strength saving throw or be knocked prone. 

Rock Catching. If a rock or similar object is hurled at the giant, the giant can, with a successful DC 10 Dexterity saving throw, catch the missile and take no bludgeoning damage from it. 

Resist. If the Giant is forced to take some action they fundamentally refuse to do by their Crown, the Giant can make a DC 18 WIS saving throw with Advantage. On a success, the Giant gains complete control of themselves for 1 minute, typically making it as hard as possible for them to resume the unthinkable act when the time runs out. On a failure, and at the end of the minute, the giant is forced back under the effects of the Crown, and cannot resist its effects, as described in Cursed Crown or in this passage, until the end of a Short or Long Rest.