Nightmare's Dawn (300 cards, released April 2002): The regions of Bograth and Paradwyn were officially introduced in this set, which also included seven d'Resh cards and two Nar cards.
Dream's End begins to be where things get interesting, with dual region cards and the powerful Shadow Geyser spells. Core gets a huge power boost in this set and two new regions are introduced - Kybar's Teeth and Weave. Two more regions were previewed with a Hyren - Bograth and Paradwyn.