Riptide Biologist is a common Creature — Human Wizard card from Onslaught (ONS), collector number 106. Current market price: $0.06 (foil $0.42), TCGplayer market prices via Scryfall.
Protection from Beasts Morph {2}{U} (You may cast this card face down as a 2/2 creature for {3}. Turn it face up any time for its morph cost.)