Base in current statement a total crap, yes chance for good free premium stuff is good, but firstly you must invest ton of resources and time (like 3+ month minimum) and actually forget about any kind of fast upgrade of your items on this time as well, also chance of get something useful not very high (from my experience for half year of crafting 3-4 cards non stop, i got only 2 useful items) If you not r1-3 player which really isn't have items to upgrade and you really no need something from regular items and you have good amount of gold, then you can activate it, but be prepare to think on 10 steps far and isn't expect from base something big.