Catalyst: Pearl of the Sea Kings

Catalyst is the deckless deckbuilder that combines careful bluffing with spell-slinging mayhem. And now, the metagame is about to be turned on its head by a revolutionary expansion! Catalyst: Pearl of the Sea Kings introduces a brand-new faction with 25 oystertastic cards.

Unfortunately, this isn't it. This isn't an expansion because there is no game of Catalyst. It's just something that someone made up.

Feel free to download these cards anyway.