September Subscribers and Retail Promo Card Owlbeartross Monster Aberration Check to Defeat: (Combat 13) then (Combat 15) Powers: Before you act, a character at your location must summon and encounter the henchman Riptide Gridylow. If that henchman is defeated, the difficulty of the check to defeat the Owlbeartross is increased by 4. If the Owlbeartross is undefeated, shuffle it into a random open location. If defeated, examine your location until you find a non-villain monster; then banish it.