Once per turn, if a DARK monster(s) you control would be destroyed by battle or card effect, you can remove 1 Black Feather Counter from your field instead
While this isnt really economic, and Im not 100% sure you can even trade the cards you get from the theme deck, the one theme deck worth getting is the Emboar one
I had taken my deck apart long before Bearer came out, but what I like about both cards is that they are massive I dare you cards that give your opponent(s) a degree of responsibility or, in the case of a late-game Impending Disaster, a last chance to cast something before it goes off
The deck can also Summon Rank 4 and Rank 7 Xyz Monsters, or various Link Monsters
A new mechanic called Resist will be introduced in Rise of the Floodborn, which makes characters tougher and harder to banish
The cards are easier to cut this way