I'm working on a mighty morphing sultai rangers deck, so ive spent a little brain power here. The reveal a card to flip morphs are huge in this kind of deck because they combo so well (and so early in the game) with Secret Plans and Trail of Mystery. The card advantage gets pretty sickening very quickly. I pulled two Trail of Mystery and 14 morphs in the prerelease and played 5 color to 4th place out of 44 players. A focused construct is viable, I think. One last piece of advice: the break for me between Sultai and Temur is Grim Haruspex. He turns an opponent's board wipe into huge card advantage and his one mana morph plays well with the enchantments.