From Pathfinder Society Scenario #2-04: Path of Kings, which isn't enabled.

Frost Troll Hunter

CREATURE 6

RARE LARGE CHAOTIC COLD EVIL GIANT TROLL

Perception +15; darkvision

Languages Common, Jotun

Skills Athletics +16, Intimidation +15, Survival +13

Str +6, Dex +2, Con +5, Int +0, Wis +2, Cha +4

Items Hatchet

AC 22; Fort +16, Ref +13, Will +11

HP 140, regeneration 15 (deactivated by acid or fire); Immunities cold; Weaknesses fire 10

Regeneration 15 (Deactivated by Acid or Fire)

This monster regains the listed number of Hit Points each round at the beginning of its turn. Its Dying condition never increases beyond Dying 3 as long as its regeneration is active. However, if it takes damage of a type listed in the regeneration entry, its regeneration deactivates until the end of its next turn. Deactivate the regeneration before applying any damage of a listed type, since that damage might kill the monster by bringing it to Dying 4.

Attack of Opportunity

Trigger A creature within the monster's reach uses a manipulate action or a move action, makes a ranged attack, or leaves a square during a move action it's using.

Effect The monster attempts a melee Strike against the triggering creature. If the attack is a critical hit and the trigger was a manipulate action, the monster disrupts that action. This Strike doesn't count toward the monster's multiple attack penalty, and its multiple attack penalty doesn't apply to this Strike.

Speed 30 feet

Melee Jaws +15 (reach 10, unarmed), Damage 2d8+9 piercing

Melee Hatchet +15 (agile, reach 10, sweep), Damage 2d6+9 slashing

Melee Claw +15 (agile, reach 10, unarmed), Damage 2d4+9 slashing

Melee Hatchet +13 (agile, sweep, thrown 10), Damage 2d6+9 slashing

Ice Stride

A frost troll hunter isn't impeded by difficult terrain caused by snow or ice, nor do they need to attempt Acrobatics checks to keep from falling on slippery ice.

Rend

Claw

A Rend entry lists a Strike the monster has.

Requirements The monster hit the same enemy with two consecutive Strikes of the listed type in the same round.

Effect The monster automatically deals that Strike's damage again to the enemy.

Skirmish Strike (flourish)

The frost troll hunter's feet and weapons move in tandem. They can either Step and then Strike, or Strike and then Step.

Pathfinder Society Scenario #2-04: Path of KingsOGL