rare le small mummy undead 

Perception +18; darkvision, tremorsense (imprecise) 30 feet

Languages Common, Gnome, Undercommon

Skills Athletics +19, Nature +19, Stealth +19

Str +6 Dex +3 Con +0 Int +0 Wis +3 Cha +0

AC  28; Fort +15, Ref +18, Will +20

HP 155, negative healing; Immunities death effects; Resistances fire 10

Breath of the Bog (aura, divine, enchantment, mental) 30 feet. A creature that begins its turn within the area feels as if its lungs were filling with water and must succeed at a DC 28 Fortitude save or be unable to speak or breathe. The creature can still hold its breath and can attempt a new save at the end of its turn. A creature that succeeds is temporarily immune for 24 hours.

Rise Up [R] Trigger A creature walks on top of a bog mummy that lies buried in the mud or peat below; Requirements Initiative has not yet been rolled; Effect The bog mummy automatically notices the creature and Burrows before rolling initiative.

Speed 20 feet; burrow 15 feet

Melee [>] fist +21, Damage 2d10+8 bludgeoning plus bog rot

Primal Prepared Spells DC 28, attack +20; 4th air walk, barkskin, freedom of movement; 3rd blindness, glyph of warding, meld into stone; 2nd acid arrow, entangle, glitterdust; Cantrips (5th) acid splash, detect magic, prestidigitation, produce flame, read aura

Primal Innate Spells DC 28; 1st illusory disguise

Bog Rot (curse, disease, divine, necromancy, negative) This affliction can't be reduced below stage 1, nor can the damage from it be healed, until it's successfully treated with remove curse or a similar effect; the affliction can then be removed as normal for a disease. A creature killed by bog rot melts into a noxious sludge and can't be resurrected except by a 7th-level resurrect ritual or similar magic Saving Throw DC 21 Fortitude; Stage 1 carrier with no ill effect (1 minute); Stage 2 3d6 negative damage and clumsy 1 (1 day)

Abomination Vaults #3: Eyes of Empty Death, page 14.