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Skeleton, Multiplying T-Rex

Bones rattle against cracked bones as this ancient, fleshless corpse clatters forth.

Multiplying T-Rex Skeleton CR 9

XP 6,400
NE Gargantuan undead
Init +6; Senses darkvision 60 ft.; Perception +0

DEFENSE

AC 14, touch 8, flat-footed 12 (+2 Dex, +6 natural, –4 size)
hp 81 (18d8)
Fort +6, Ref +8, Will +11
DR 5/bludgeoning; Immune cold, undead traits

OFFENSE

Speed 40 ft.
Melee bite +20 (4d6+22)
Space 20 ft.; Reach 20 ft.

STATISTICS

Str 32, Dex 15, Con —, Int —, Wis 10, Cha 10
Base Atk +13; CMB +28; CMD 40
Feats Improved InitiativeB
SQ multiplication, powerful bite

SPECIAL ABILITIES

Multiplication (Su)

When a multiplying skeleton is reduced to 0 hit points, its bones reform 1d4 rounds later into two smaller multiplying skeletons with 9 Hit Dice each. Each resulting multiplying skeleton continues to reform into smaller and smaller sizes (with half the HD of the previous each time it multiplies.) A multiplying tyrannosaurus skeleton reforms into two Large skeletons with 9 HD each, each of which then reforms into two Small skeletons with 4 HD each. When these four Small skeletons are killed, the skeleton no longer multiplies and is finally destroyed.

Powerful Bite (Ex)

A multiplying tyrannosaurus skeleton applies twice its Strength modifier to bite damage.

Editor's Note

We've calculated the stats that change at each size. Str decreases and Dex increases as the skeleton becomes smaller. Natural armor bonus reduces as well.

Large (9 HD)

AC 14, touch 12, flat-footed 11 (+3 Dex, +2 natural, –1 size)
hp 40 (9d8)
Fort +3, Ref +3, Will +6
Melee bite +12 (2d6+14)
Space 10 ft.; Reach 10 ft.
Str 24, Dex 17
Base Atk +6; CMB +14; CMD 27

Small 4 HD

AC 17, touch 16, flat-footed 12 (+5 Dex, +1 natural, +1 size)
hp 18 (4d8)
Fort +1, Ref +6, Will +4
Melee bite +5 (1d6+2)
Str 12, Dex 21
Base Atk +3; CMB +3; CMD 18

Calculations by sowhereaminow