This deck, not built by Paul Sligh, uses the mana curve in a rather unusual fashion. The Terramorphs are actually considered part of the 1 mana slot since they take up the first turn. Impulse and Powersink were considered part of the 2 mana slot, since the Power Sinks were often used against other decks practicing Sligh theory (and hence tapping out on turns 2 and 3), while the Impulses were used to fish for cards at the end of the opponents turn after your second turn. The Azimaets and the Man-o-Wars are the main turn 3 slot fillers, although Power Sink will suffice. The Man-O-Wars are excellent at disrupting the opponent's plan. This deck actually has 12 creatures in the 4 mana slot, an assumed no-no for Sligh decks, but actually use these to pound down the opponent. The Hazeriders just ruin a mono-Red player's day, while the Tsunamis and the Vaporous are just plain big. The lesson of turn efficiency was considered very carefully in this deck's design.

-- I think it may be quite nice to replace the vaporous djinn with conundrum sphinx, then replace impulse with brainstorm/ponder/some scry instant