Purple Pentapus is a common Creature — Octopus Starfish card from Avatar: The Last Airbender Eternal (TLE), collector number 233. Current market price: $0.13 (foil $0.32), TCGplayer market prices via Scryfall.
When this creature enters, surveil 1. (Look at the top card of your library. You may put it into your graveyard.) {2}{B}, Tap an untapped creature you control: Return this card from your graveyard to the battlefield tapped.