Multiattack. The giant makes two attacks, using Stone Sword or Boulder in any combination.
Stone Sword. Melee Attack Roll: +8, reach 15 ft. Hit:21 (3d10 + 5) Slashing damage.
Boulder. Ranged Attack Roll: +8, range 60/240 ft. Hit:14 (2d8 + 5) Bludgeoning damage. If the target is a Large or smaller creature, it has the Prone condition.
Name Sleep (Recharge 5–6). The giant falls into a deep, restorative slumber. The giant gains 20 Temporary Hit Points and has the Unconscious condition until it takes damage or the end of its next turn. The giant has Advantage on ability checks and saving throws for 1 minute.
The giants of the realm of Lorwyn-Shadowmoor are wise, ancient beings wandering their homeland in search of wondrous things or simply a place to rest. They are deeply in tune with nature but care little for the smaller denizens around them. At best, this makes a giant aloof and disinterested in the squabbles of boggarts, kithkin, elves, and others. At worst, giants might be wrathful toward smaller folk, seeing them as invasive pests to be squashed.