Jade cards gain 1$ for every hand they aren't played in; when triggered, they will give back that amount of money
To transform regular cards into Jade cards, you need a new tarot card; The Pentacle
Obsidian cards have a 1 in 3 chance to weather into a card of a lesser rank (i.e. An Obsidian Ace will weather into an Obsidian King, and so on)
To transform regular cards into Obsidian cards you need another new tarot card; The Sword
