Here is the first draft of my new monster what you think
Geyserin
Large Dragon
Hit Dice: 5d12+ 25 (55 Hp)
Initiative: +2 (Dex)
Speed: 30 ft. Fly 60 Ft. (Average) Swim 60 ft.
AC: 15 (-1 Size, +2 Dex, +4 Natural Armor )
Attacks: Bite +8 Melee, 2 Wings +6 Melee or 2 Claws + 6 Melee
Damage: Bite 2d6+3 2 Wing 1d6+3 or 2 claw 1d6+4
Face/Reach: 5ft. by 10ft/ 5ft.
Special Attacks: Breath weapon, rake, improved grab, snatch
Special Qualities: Water breathing, blind-sight
Saves: Fort +9 Ref +6 Will +6
Abilities: Str 17 Dex 15 Con 19 Int 7 Wis 12 Cha 9
Skills: Listen +5, Move Silently +8, Spot +8, Swim +15
Feats: Alertness, Flyby Attack
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Climate/Terrain: Cold, and temperate coastal waters, and underground
Organization: Solitary, Pod , or Wing (3-5)
Challenge Rating: 6
Treasure: Standard
Alignment: Usually Neutral
Advancement: 6-10 HD (Large), 11-15 HD ( Huge)
A far removed cousin of the wyvern the Geyserin or Geyser drake is a large flying lizard with an elongated adder like face, and a wide flat dorsal fin for its tail. Growing to a size of 30 ft a typical geyser drake has a dark mottled grey upper body with a light blue grey underside and wings. Found along costal cliffs, and in ocean grottos the Geyser drake fiercely hunts seals, and sharks gliding gracefully just under the surface of the water.
Breath Weapon A Geyserin has only one breath weapon a cone of scaldling steam which deals 5d6 points of heat damage. A creature can make a successful reflex save (DC 17) for half damage