ok so from the jTO hype site for epi 5 I see this:
and from it I am making this connection on guardians. Get the card identification skill, then the soul seed, use the card skill to get all the secret cards, then use them to do the quests that awaken the guardian. So now I actually understand what the dead eyed girl was doing in that guide.
then it's saying how episode 5 is lvl 160 and the drill is about the black market.