Omanyte / Omaster

Omanyte is a small extinct cephalopod mollusk Pokémon similar to an ammonite or nautilus. It has a sky-blue body with ten tentacles and a pale yellow, helix-spiraled shell on its back. The shell's rim has two circular indents where Omanyte's large saucer-like eyes protrude. If attacked or threatened, it quickly withdraws into its hard shell.
Omanyte is considered extinct, although it can be revived from Fossils. Its fossils have been excavated in areas that were once oceans long ago. Omanyte regulated its buoyancy by storing and releasing air within its shell and controlled direction by twisting its tentacles. While Omanyte fed on plankton, it was preyed on by Archeops and Carracosta. Omantye can now be found in the wild due to being released by people or escaping after being restored to life, causing this species to become a problem.

Omanyte

Because some Omanyte manage to escape after being restored or are released into the wild by people, this species is becoming a problem.

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Armor Class	10 (natural armor)
Hit Points	4d4-4
Speed	15 ft.	Swim 30 ft.
Strength	6 (-2)
Dexterity	6 (-2)
Constitution	8 (-1)
Intelligence	6 (-2)
Wisdom	8 (-1)
Charisma	9 (-1)
Damage Vulnerabilities	Lightning
Damage Resistances	Cold
Senses	Passive Perception 9
Languages	Aquan
Challenge	0 (10 XP)
Action 1	Constrict	Melee Weapon Attack	d20+0 to hit
Reach 5 ft., one target	Hit 1d4-2 bludgeoning damage	and target is grappled (escaped DC 8).	Only one creature can be grappled at a time
Action 2	Bite	Melee Weapon Attack	1d4-2 piercing damage to a grappled creature
Reaction	Withdraw	Omanyte	adds 2 to its AC against one melee attack
that would hit it. To do so,	Omanyte must see the attacker

Omastar is a cephalopod mollusk Pokémon similar to an ammonite or nautilus. Its sky-blue body has several tentacles; the tentacles toward the front are shorter and thicker than those in the back. There is a pale yellow, helix spiraled shell on its back. Several sharp spikes line the shell's midsection from the front to about halfway down its back. The shell's rim has two circular indents where Omastar's eyes are visible. Its eyes have yellow sclerae and vertically slit pupils. It has an oval mouth with a four-sectioned, fang-like beak.
It is believed that Omastar's extinction was a consequence of the increasingly heavy weight of its shell that affected its mobility, including its hunting. Omastar swam the seas in search of prey, including prehistoric Shellder. It attacks only when prey comes near its tentacles. Omastar uses its tentacles to ensnare its prey before biting down with the deadly force of its beak. Its fangs are powerful enough to crush through rocks. With the shell broken, it would suck out the contents. Omastar was in turn preyed upon by Carracosta. Omastar is thought to be a distant ancestor to Octillery.

Omaster

Weighed down by a large and heavy shell, Omastar couldn’t move very fast. Some say it went extinct because it was unable to catch food.

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Armor Class	14 (natural armor)
Hit Points	12d6+24
Speed	20 ft.	Swim 30 ft.
Strength	12 (+1)
Dexterity	10 (+0)
Constitution	14 (+2)
Intelligence	6 (-2)
Wisdom	12 (+1)
Charisma	10 (+0)
Damage Vulnerabilities	Lightning
Damage Resistances	Cold
Senses	Passive Perception 11
Languages	Aquan
Challenge	1 (200 XP)
Action 1	Multiattack	Omastar makes two attacks
Action 2	Constrict	Melee Weapon Attack	d20+3 to hit
Reach 5 ft., one target	Hit 1d6+1 bludgeoning damage	and target is grappled (escape DC 11).	Only one creature can be grappled at a time
Action 3	Bite	Melee Weapon Attack	1d6+1 piercing damage to a grappled creature
Reaction	Withdraw	Omastar adds 2 to its AC against one melee attack that would hit it.	To do so, Omastar must see the attacker