Frostmourn

AC 17 - HP 115 - 30 ft.
ST +6 / -1 / +9 // -1 / +4 / +4
Vuln. Fire
Imm. Cold, Poison; Charmed, Fright, Para, Petri
Multiattack 1 Touch + 1 Axe, replace 1 with Ray

Freezing Touch +10 / 8d8 cold, if kill 1 hp & frozen.
Icy Axe +10 (10ft) / 3d8+6 slashing + 2d6 cold.
Polar Ray +8 (120ft) / 5d10+4 cold, -10ft movement.

Blizzard Escape If hit, dissolves into blizzard half
damage, teleport 30 ft.