A moon giant varies from 5 to 6 feet tall when “normal” (or their smallest) at the new moon to about 12 to 13 feet at the full moon - growing or shrinking about a half foot a day. The entire tribe grows and diminishes in size in sync with one another, although if a member leaves for an extended period of time, their growth cycle will begin to fall out of sync with the rest.
They are usually found in remote, but temperate locations… Some tribes choose to go nude at all times, eschewing clothing because of the troublesome nature of their curse. Others wear the clothing of men when they can or cover themselves with blankets or hides. Their homes are large and may be well constructed but are continually in need of repair. Due to their limited intelligence at full size, they are clumsy and often engage in disputes with one another during full moons - this can lead to destruction of property which is only fixed nearer to new moons when they’ve regained their senses and smaller size. The effect on their society is like a regularly occurring mass bender, followed by a hangover requiring cleaning up and mending relations.
Trade with moon giants is not unknown, and is always carefully scheduled beforehand. In general, they are very distrustful of outsiders. In humanoid settlements near where these strange creatures are said to exist, humorous cautionary tales are told of men and giants alike unknowingly acquiring moon giant wives.
A moon giant can only be cured of their curse through the use of two Wish spells. The first to free them, and the second to prevent their offspring from having the affliction (and continuing to pass it on themselves.)
Armor Class: (varies by size) 4 to 9 [14-10]
Hit Dice: (varies by size) 1-9
Attacks: 1 (varies by size) d6 with weapon, d10 or 2d8 (large weapon or rock throwing)
Saving Throw: 8-16 (varies by size)
Special: See description.
Challenge Level/XP: (varies by size) 1/15 to 9/1100