[quote=@Deluge]
Well, the new cards are very dark-centered, so it makes sense I guess lol. It's going to be very strong for a structure deck, probably on-par if not better than the Dinosaur one. (Which wrecked the TCG for awhile) with a few meta adjustments. 
[/quote]

I haven't played Yu-Gi-Oh or even followed it for a couple years now; I stopped back when the first Kozmo cards were first being released. I don't know what the current meta looks like but the Lair of Darkness deck does look interesting and very strong. A field spell that makes it so that you can tribute your opponents monsters, something that nothing really has a defense against except this decks boss monster, for their own effects is crazy.

Plus, if I am reading the effects right, the fact that you can tribute a dark monster you control to search the boss dragon, then immediately summon that dragon because you tributed a dark monster this turn, because the boss does not have to have been in your hand when the tribute was made to be able to activate the self summon effect.

I can see the field card being limited if this deck does well and maybe the search monster as well.