I have no doubt that both cards will be immediate four-ofs in Historic Merfolk
Loyal warhound is the second iteration to Knight of the White Orchid which is both played in this deck understandably for ramp, but Codsworth ramps out equipment every time while the warhound may miss if you have the greatest or tie the greatest land count
The white-blue archetype has a "Knights matter" theme, so this card was designed to play into that archetype
Victory Medal and Victory Cup are other somewhat more benign examples, the former either drawing a card or searching the deck, and the latter functioning exactly as a generic Pokball
Second, it had to happen somewhat frequently, as it's very easy to forget something that's seldom used
Category: Mouse Pokemon : Sandshrew, Sandslash, Rattata, Raticate, Pikachu, Raichu (any of each)