Jwari Scuttler

Vigilance
When Jwari Scuttler dies, the owner of the
source that slayed Jwari Scuttler gains 4 life and
investigates. (Create a Clue token. It's an artifact
with "{2}, Sacrifice this artifact: Draw a card.").
"Yeah, they've got a lot of meat. The only downside
to eating 'em is that you often find human bones and
body parts inside."
—Jaby, Silundi Sea nomad