Half-fiend Wyvern CR12
XP 25,600
NE Large outsider (native)
Init +7; Senses darkvision 60 ft., low-light vision, scent; Perception +24
Defense
AC 22, touch 12, flat-footed 19
(+3 Dex, +10 natural, -1 size)
hp 126 (11d12+55)
Fort +11, Ref +8, Will +10
DR 5/magic; Immune acid...