I have 7000 gold to spare and want to extend my possibilities to play in wild. I currently have decks for raza priest, cube lock, odd paladin, odd warrior and kings and rogue. I am interested in playing stuff like exodia mage or similar stuff that doesn’t end after 3 rounds (I tried Aggro Druid and yeah it’s fun but only for a few games). I have all the cards from the last 3 expansions and almost none from the expansions before (I just crafted cards specifically to play aforementioned wild decks). so where should I invest my gold?
fyi: I don’t want to invest it in the new expansion, I’ve got that covered.
If you want to be able to play various wild decks (both meta and meme), then as a general guideline, it's best to spend your gold in packs from expansions Boomsday Project, Frozen Throne, Kobolds that have lots of decent+ cards that see play in various decks. However for a more precise answer you'd need to make a list of how many legendaries/epics/rares/commons you would like to own, versus how many you already have from each expansion in order to accurately estimate the expected benefit of a pack from one of those