and everyone will burn thousands of Dec

One has to have to have some free DEC to do that... I dont have any. I would have to remove it from the Land or Pool do that and I will not.
So I dont think I will be unlocking many if any cards at all. And buying the missing cards to top up the ones I have doesn't look like a good idea either, since that card will eventually be forever locked, so no way to sell, rent, or put on land if I dont want to play with it (or drops to Wild). I could understand the pay to unlock thing, but I cannot agree with locking forever after 180 days. It should be our choice to unlock or not when we want or have the money to do so.
Strange way to keep players motivated... looks like it does the opposite.