uncommon n large animal dinosaur 

Perception +23; low-light vision

Skills Athletics +25

Str +7 Dex +2 Con +7 Int -4 Wis +4 Cha +0

AC  34; Fort +25, Ref +20, Will +22

HP 220; Immunities olfactory

Buck [R] DC 32

Dogged Persistence [R] Frequency once per minute; Trigger The war sauropelta would be affected by the immobilized, paralyzed, slowed, or stunned conditions, or by an effect that would give it a penalty to its Speeds, from a source of 14th level or less; Effect The war sauropelta negates the triggering condition or effect.

Speed 25 feet

Melee [>] tail +24 (backswing, reach 10 feet), Damage 3d8+13 bludgeoning plus Push and punishing tail

Melee [>] foot +24, Damage 3d6+13 bludgeoning

Punishing Tail A creature struck by the war sauropelta's tail must attempt a DC 32 Fortitude save. On a failure, it's stunned 1; on a critical failure, it's stunned 3.

Trample [>>>] Medium or smaller, foot, DC 32

Extinction Curse #4: Siege of the Dinosaurs, page 46.