Talk:Booster Set 4: Darkness Fable/@comment-26059748-20140930112128/@comment-24965906-20140930201303

Let's look at it. Magic is getting new cards for sure. And so is Katana because Zanya's appearing again. Demios is a Buddy Rare, so he'll appear in the next set.

That's Magic, Katana and DDW, along with Dragon and Generic (maybe Ancient in a pipe dream). However, any of these World's except DW and Generic can be extra boosters only, allowing for Hero. If anything, Hero World is either an Extra Booster, BT06 and/or the BR for BT05 (which means 06 anyhow).

There's a small possibility of it being in BT05, but unlikely.