A Matter Molecule creature, Saltpeter.

The Marvelous Molecular Masterpiece Set is a set created by Aaron David Fairbanks. It has 200 cards with random amounts of cards in each element. It contains cards representing all the elements of the Periodic Table, in addition to other elementary particles and compounds. This is really building on parodying the "nerdy" parts of card games, with ridiculously stupid corny jokes and over the top nerdy science things. This set features the Default Card Arts.