Granite Glyptodont

Creature 8

Large
earth
elemental

Perception: +17; darkvision, tremorsense (imprecise) 90 feet
Skills: Athletics +18; Str +6, Dex +1, Con +6, Int +0, Wis +5, Cha +0

AC: 27; Fort +18, Ref +13, Will +17
HP: 145; Immunities bleed, paralyzed, poison, sleep

Speed: 30 feet, burrow 20 feet, earth glide

Melee ◆ tail +20 (forceful, reach 10 feet, versatile p), Damage 2d12+9 bludgeoning plus Calcification

Calcification (incapacitation, primal) A blow from a granite glyptodont's tail Strike hardens the flesh of the creature struck. The target must succeed at a DC 26 Fortitude save or become Slowed 1 (Slowed 2 on a critical failure). Further failed saves against calcification increase the value of the slowed condition. Once a creature's actions are reduced to 0 by calcification, that creature becomes Petrified. If the creature isn't petrified, the slowed conditions end once 1 minute passes without the creature failing a save against calcification.

Every 24 hours after it was petrified, the creature can attempt a DC 26 Fortitude save to recover. On a success, it becomes flesh again but is slowed 1 for the next 24 hours. On a critical success, the creature recovers and isn't slowed. On a failure, the creature remains petrified but can try again in 24 hours. On a critical failure, the petrification is permanent, and the creature can't attempt any more saves.

Earth Glide A granite glyptodont can Burrow through earthen matter, including rock. When it does so, it moves at its full burrow Speed, leaving no tunnels or signs of its passing.

Source: Pathfinder Monster Core 2

Running this fight? Add the granite glyptodont to the initiative tracker: type its name and the AC, hit points and Perception for initiative fill in, and the book button shows this stat block mid-fight.