Merfolk of the Pearl Trident

No rules text, no abilities, just a vanilla body printed in the foundational set as the literal floor of the Merfolk creature type: this is what the tribe looked like before the tribe had a payoff. The design exists because the earliest sets needed each color to have a one-drop creature and each tribal banner to have a representative, and blue's contribution was a body so plain it carries no abilities whatsoever. Its weight is structural rather than mechanical. Lord of Atlantis came out of the same era, and every Merfolk lord printed since (Master of the Pearl Trident, Merrow Reejerey, and the broader pump-the-team lineage) implicitly assumes a creature like this exists to be pumped; the lord-and-body template that defines blue tribal aggro traces its genealogy to this slot. The name itself became load-bearing: Master of the Pearl Trident, printed nearly two decades later, is a direct callback, and the "Pearl Trident" became a flavor anchor for the entire Atlantean Merfolk line in blue. As a card to cast, it was functionally obsolete the moment a lord hit the table beside it; as an artifact of design, it is the point on the timeline where Wizards decided creature types would matter, even before they had the mechanics to make them matter.