This automaton looks to be carved from mud and stone. It stands as tall as a human and where its heart would be, if it were alive, is a fist-sized rounded reddish-colored stone.
Speed 20 ft.
Str 21, Dex 9, Con —, Int —, Wis 11, Cha 1
A stone guardian has a 25% chance to ignore additional damage caused by critical hits or sneak attacks.
A stone guardian is linked to a magic ring. The construct will never attack any creature that wears this ring, nor any creatures within 10 feet of the ringwearer, unless one of those creatures attacks the guardian first.