Trident of Warning

Weapon Two-Handed, Magic Common (this item requires attunement) [Divination]

A well-worn trident, with a wooden hilt and three pitted, scratched tines. A simple eye is etched into the base of the fork. It seems to shift subtly in your hand when bodies of water are nearby.

This weapon enables its wielder to determine the location, depth, kind, and number of “aquatic predators” within 360 feet. It must be grasped and pointed in order for the character using it to gain such information, and it requires one action to scan a hemisphere with a radius of 360 feet. Yeah, the magical glyphs that give the trident its power are tuned to “aquatic predators”, which even a novice enchanter would note is a weirdly loose parameter for a magical effect. It is not weighted for throwing. Don’t try to throw it.