I don't think the DEC if burnt, 95% it goes to the seller of the card as 5% to the UI that sold the card, none of them burn a portion of rewards as far as I'm aware.
I don't think the DEC if burnt, 95% it goes to the seller of the card as 5% to the UI that sold the card, none of them burn a portion of rewards as far as I'm aware.
RE: UPDATE - NO! We can't raise DEC value by buying cards using DEC (just potions)