Some ideas for card demand. Besides there are a lot of cards needed for land, some individual land stats should be added.
Like some cards mine better resource 1 as recourse 2, or like general topic +5% mining or shit like that.
The reason is, this could balance some stuff out.
Another idea is, to burn some cards for harvesting gear that brings those +5% in a harvesting pack. So it is random and can be for high rollers.
The card burn/ sacrifice is pretty nuts and should be IMO with a pack. Burn 10k DEC worth of cards and get a Burn pack that could have a card like archmage ( something special).
OFC these special cards would need to be insanely rare, but I think it should kill almost all cards that are under burn value.
100k special packs with 3 cards or stuff like that could kill so many cards and replace those with some rarer ones or stuff for land.
From Insanely rare archmage style of card up to Tools for land for example.
Anyway, these are my 2 cents.