Vampire Walrus

     It started with a video about why orcas generally avoid attacking walruses.
     The narrator got to the part about the dangers of those enormous tusks — how a walrus is not just a large, slow animal, but a heavily armed creature capable of seriously injuring a much larger predator — and I immediately thought "Vampire."

     The rest of the day became a rabbit hole involving undead traits, walrus biology, Arctic folklore, and a surprisingly important distinction between a floating log and actual driftwood.

Vampire Walrus
CR: 6     Large Undead (Augmented Animal)     HD: 5d12 (33 hp)
Init: –1     Spd: 10', swim 30'
AC: 18 (–1 size, –1 Dex, +10 natural), t: 8, ff: 18
Attacks: (BAB +2; Grap +11); +6 Gore: 1d8+5 plus Improved Grab
Space/Reach: 10 ft./5 ft.
SA: Blood Drain, Haunting Song, Improved Grab
SQ: DR10/Driftwood or Walrus Ivory, Fast Healing 3, Low-light Vision, Life Sense 60', Speak with Pinnipeds, Undead Traits
Align: NE     Saves: Fort +1, Ref +0, Will +5
Str 21, Dex 9, Con --, Int 14, Wis 12, Cha 16
Skills: Speak Common and two regional languages (or Aquan and Giant), Bluff +8, Hide -2, Intimidate +8, Knowledge (Local) +7, Listen +8, Sense Motive +6, Spot +8, Survival +6, Swim +18
Feats: Ability Focus (Haunting Song), Alertness
Environment: Cold aquatic
Organization: Solitary
Advancement: 6–9 HD (Large)
Level Adjustment: —

Vampire Walrus
     Vampire Walruses are rare undead predators found in the coldest seas of the frostfell. Unlike common vampires, they are not tied to crypts or castles, but to the ice, the ocean, and the communities that survive along their shores.
     Ancient sailors and coastal communities tell stories of the Old Hunter, a figure who appears during storms or periods of hardship. He arrives exhausted and frost-covered, carrying a spear and asking only for shelter beside the fire. He knows the names of families, remembers old hunting grounds, and speaks with the wisdom of someone who has lived through generations of winters.
     Those who welcome him as a guest are protected by the ancient laws of hospitality. Those who betray those laws, however, discover that the old hunter is not a man at all.
     When hunting, a Vampire Walrus prefers patience over violence. It uses its haunting call to lure prey toward the shore, often appearing first as a familiar voice carried across the ice. Victims may believe they hear a lost companion, a family member calling for help, or a hunter trapped in the storm. Those who approach the water often find the fog thickening around them just before the creature attacks.
     In its true form, a Vampire Walrus resembles an enormous, undead bull walrus with pale, scarred hide, glowing eyes, and bloodstained ivory tusks. Unlike many vampires, it does not fear the sea; the ocean is its sanctuary. Saltwater restores its unnatural vitality, allowing wounds that would destroy another undead creature to close almost instantly.

Ecology
     A Vampire Walrus does not create traditional vampire spawn. Instead, it is a solitary creature that slowly builds a territory. Coastal communities may go generations without seeing one, only to find old warnings carved into driftwood or passed down through stories.
     They are intelligent enough to understand civilization but remain territorial predators. They recognize family lines, remember ancient grudges, and may return to a village decades later if they believe an old debt remains unpaid.
     Some communities maintain traditions for dealing with a Vampire Walrus. They leave offerings of food and drink at the edge of the ice, avoid traveling alone during heavy fog, and preserve ancient ivory weapons passed down through generations. These customs are not intended to appease the creature, but to remember the rules that keep both sides from violating the ancient boundaries between hunter and prey.

Combat
     A Vampire Walrus prefers to begin encounters from concealment, using fog, darkness, and its haunting song to separate victims from companions. It attempts to grapple isolated targets and drag them into deep water where its strength and regeneration make it nearly impossible to defeat.
     Experienced hunters know that fighting one on the ice is dangerous, but fighting one in the sea is almost hopeless.

• Alternate Form (Su): Once per day as a move action, a Vampire Walrus can assume the form of a Medium humanoid, typically appearing as a weathered hunter, fisherman, or village elder. The form lasts until the vampire chooses to revert to its natural form.
     A Vampire Walrus may also assume a gaseous form at will, appearing as a bank of Arctic fog. While in this form it gains the benefits of gaseous form.
• Blood Drain (Ex): A Vampire Walrus deals 1d4 points of Constitution damage each round it maintains a successful grapple. For every point of Constitution damage dealt, it heals 5 hit points. Hit points gained beyond its maximum are gained as temporary hit points, up to its normal maximum hit points. These temporary hit points last for 24 hours.
• Fast Healing (Su): A Vampire Walrus has fast healing 3 while submerged in saltwater. This ability does not function while the creature is on land, in fresh water, or in gaseous form.
• Haunting Song (Su): As a standard action, a Vampire Walrus can emit a haunting call. All living creatures within 300 feet who hear the song must succeed on a Will save (DC 17) or become fascinated for 1 round. Creatures that remain fascinated for 3 consecutive rounds must succeed on a second Will save or become charmed as though affected by charm monster. A charmed creature feels compelled to approach the shoreline or answer the call.
• Ice Walker (Ex): The Vampire Walrus is never at risk of slipping on snow or ice, regardless of form.
• Improved Grab (Ex): A Vampire Walrus that hits with its gore attack can start a Grapple as a Free Action without provoking an attack of opportunity.
• Life Sense (Su): A Vampire Walrus notices and locates living creatures within 60 feet, as if it possessed blindsense. This ability functions through ice, snow, fog, and water, but cannot detect undead, constructs, or other creatures without a living heartbeat.
• Speak with Pinnipeds (Su): A Vampire Walrus can communicate with walruses, seals, and other pinnipeds as though using a shared language.
• Undead Traits: Immunity to all mind-affecting effects (charms, compulsions, phantasms, patterns, and morale effects).
Immunity to poison, sleep effects, paralysis, stunning, disease, and death effects
     Not subject to critical hits, nonlethal damage, ability drain, or energy drain.
     Immune to damage to its physical ability scores (Strength, Dexterity, and  Constitution), as well as to fatigue and exhaustion effects.
     Negative energy (such as an inflict spell) can heal undead creatures.
     Immunity to any effect that requires a Fortitude save (unless the effect also works on objects or is harmless).
     Not at risk of death from massive damage, but when reduced to 0 hit points or less, it is immediately destroyed.
     Not affected by Raise Dead and Reincarnate spells or abilities. Resurrection and true resurrection can affect undead creatures. These spells turn undead creatures back into the living creatures they were before becoming undead.
• Weaknesses: Deep Sleeper (Ex): During daylight, it does not need a coffin. It can sleep beneath sea ice, in underwater caves, beneath a glacier, or at a depth beneath the water's surface where sunlight cannot penetrate.
     Sunlight Vulnerability (Su): A Vampire Walrus exposed to direct sunlight takes 2d6 points of damage per round. If reduced to 0 hit points by sunlight, it is destroyed.
     Hospitality (Su): A Vampire Walrus cannot enter a privately owned residence unless invited by the rightful owner or a lawful tenant. Once invited inside, the creature is bound by the ancient laws of hospitality. It may not attack, harm, or drain blood from any resident or guest within the home and must behave as a respectful guest. While under the protection of hospitality, it may share food, exchange stories, and converse with those present. The protection ends when it leaves the residence or when the invitation is formally withdrawn.
• Skills: A Walrus gains a +8 racial bonus on Swim checks to avoid a hazard or perform a special maneuver. It can use the Run action while swimming as long as it moves in a straight line.

(Natural and Human forms)

The elder spat into the fire, his blind eyes fixed on the sound of the crashing surf outside the skin tent.

"You bring me a branch torn from the pine ridge, sticky with sap, and you call it a weapon?" the old man scoffed. "A vampire walrus would snap that like dry grass against its blubber."

The young hunter shifted. "But elder, it was soaking in the surf. I pulled it from the tide myself."

"Water does not make the weapon, boy," the elder snapped, leaning forward. "That is just a wet log. It still remembers the earth. It is soft. It is heavy with life. The beast will smell the green wood and crush you before you draw blood."

He reached into the shadows and tossed a heavy, pale object onto the fur rug between them. It hit the ground with the solid, metallic thud of a stone. It was a shaft of wood, but it was bone-white, smoothed by a thousand tides, and completely stripped of bark.

"This is driftwood," the elder whispered.

"The sea has chewed away its flesh. The salt has choked out its spirit, and the sun has baked it into iron. Look at the grain—it is twisted, scarred, and tighter than the horn of an anvil. It has survived the deep currents where the monsters run. Only wood that has died in the sea, been reborn on the rocks, and bleached to the color of bone has the strength to pierce a demon of the ice."

The Tide-Returned Spear (+1 Undead-Bane Spear)
Description:
     The Tide-Returned Spear is carved from ancient driftwood polished smooth by decades beneath the Arctic seas. Unlike ordinary wood, the shaft has been stripped of bark, sap, and the last traces of life by salt, ice, and countless tides. Its grain is twisted and hardened, resembling bleached bone rather than timber.
     The spearhead is fashioned from the ivory tusk of a great bull walrus slain during a winter hunt and bound to the shaft with traditional sinew and carved leather. The weapon bears no ornamentation beyond the marks left by the sea and the hands of those who have carried it.

Powers:
• Against undead creatures, it gains a +2 enhancement bonus and deals an additional 2d6 points of damage.
• The spear bypasses the damage reduction of Vampire Walruses.
• When wielded against a Vampire Walrus, the spear's enhancement bonus increases to +3, and the creature cannot assume gaseous form for 1 minute after being struck.

Using the Vampire Walrus in your campaign

The big thing to remember is that the Vampire Walrus shouldn't charge in screaming to get cut down by a party of adventurers. It should try and lure them away, one at a time, before it strikes.

Adventure Hook
The Missing Hunters
Several hunters have vanished along a dangerous stretch of coastline. The tracks suggest they walked willingly toward the sea.

The Tide-Returned Spear
The only weapon capable of bypassing the creature's defenses has been lost beneath the ice. The characters must recover the legendary spear before the next winter storm arrives.