The Deep ones hear your call

A fishy man in full business attire appears at the shore by your house one day. He smells awful, but is polite as he extends his webbed hands holding a golden statue. "The most revered one" he says in a snaky tone. He tips his hat and walks back toward the waters, whistling accompanied by a gurggling sound from his gils. You look at the statue, overgrown with algae and somewhat rustic. You take it home and assemble a small altar to it, making offerings to this God of the Deep. He grants you many favors.