User blog comment:RevengerSword15/Beginner Advice?/@comment-11372432-20160806214439

Hero World is very popular. You'll see many different decks in that world along your path. It probably is the second most used world after Dragon, but that's just because Dragon is in every set except the Hero EBs. Superheroine is the best from that world right now. But do be aware of Braves and Darkheroes, too.

Dragon will never not be in the meta. As said below, Fifth Omni is still the one you'll see win from that world, despite being 9 months old in a world that changes on a regular basis. Folks do love them some Sun Dragons, though.

Dungeon has never really left the meta since it first came out (in fact, it won the NA continentals a week after its release!). The only good deck in that is Knights, which is basically a "toolbox what you need, then deal as much damage as you can in one sitting ASAP" type deck.

The way to deal with both Knights and Fifth Omni is your choice of A) kill them faster than they do you, B) defend until they no longer have the field to do much with, and/or C) disrupt their combo game with counter moves. Every deck should have access to at least one of the above strategies.

There are more decks out there, but the above is what you'll see most often right now. There is a decent chance that Ninjas and Wild Dragons came back into the meta with the new set, though.