Combat: Nawidnehrs relish battle. They usually begin attacking with a roar. In shark form, this roar is a thunderous boom that fills a cone 5 feet wide at the creature's mouth, 50 feet long, and 35 feet wide at the far end. Creatures within the cone sudder a shockwave that renders them unconscious for 2d4 rounds ? unless they make successful saving throws vs. breath weapon.
When in humanoid form, the creature's roar takes the form of a haunting song. All listeners within 50 feet must make a saving throw vs. spell. Failure leaves the listener paralyzed with fright for 1d4+4 rounds.

The nawidnehr (NAH-widd-near) is a great shark capable of assuming humanoid form. this powerful marine predator has an insatiable desire to kill. Also called the roaring shark, or sharkwere, the nawidnehr uses its shape-shifting abilities to pursue its prey onto land or insinuate itself into an unsuspecting party for a surprise attack.
All nawidnehrs speak the common tongue of humanity. Each individual sharkwere speaks several (1d4+1) other demihuman racial tongues as well.
Sometimes the creature decides not to roar when attacking in its natural form. Rather, it lunges at swimmers from below, imposing a -3 penalty to its opponents' surprise rolls.
When nawidnehrs use their shape-shifting ability to fool humanoid victims, they try to lure the victim into the water before attacking. They usually leap into the sea, dragging paralyzed victims with them. However, sharkweres will grappled with an opponent and enter the water with a victim in their grasps. Nawidnehrs have effective Strength scores of 18/00 or 19 for this purpose.
Habitat/Society: Nawidnehrs hunt victims every waking moment; they can't stand to leave any other creature in peace. Even the sahuagin fear these powerful predators. Sharkweres swim the oceans, seeking prey as any natural predator. However, these craft beats often pose as fishermen, marooned sailors, or friendly natives to attract victims. When encountered under the sea, there is a 40% chance that 2d4+1 large sharks (7-8 HD) accompany a nawidnehr.
Shade said:Keen scent appears to have pierced the change shape ability in half.
Shade said:We should either give 'em the amphibious quality or water dependent ability of the sahuagins.
Shade said:Speaking of sahuagins, do we want to borrow this ability?
Speak with Sharks (Ex): Sahuagin can communicate telepathically with sharks up to 150 feet away. The communication is limited to fairly simple concepts such as "food," "danger," and "enemy." Sahuagin can use the Handle Animal skill to befriend and train sharks.
Shade said:Improved Init? Hide and Move Silently? Stealthy?
BOZ said:Not sure what you mean?
BOZ said:I say amphibious. I didn't see anything in there that suggested they only breathed water or had any difficulties on land when in humanoid form.
BOZ said:Maybe, or we could give them something like what lycanthropes have.
BOZ said:Why not all?![]()

(Dungeons & Dragons)
Rulebook featuring "high magic" options, including a host of new spells.