My Splinterfright deck. I wanted as few useless cards in the graveyard as possible, so all noncreature spells are flashback spells, and the land base is as low as possible without getting constantly manascrewed. It works pretty well.
A few explanations:
Dawntreader Elk: A solid two drop in this deck, providing for some early protection while giving you the option to sac it if you aren't getting any lands.
Gnaw to the Bone: This card is this deck's lifeline. Since the creatures in this deck take a while to bulk up, your opponent is pretty free to chip and smash away at your life total, and this card will get it all back in one turn. You can flash it back too, which doubles your potential amount of lifegain.
Increasing Confusion: This might come down to preference here. A fourth Dream Twist is also a good idea instead of this, but sometimes, being able to dig a lot deeper into your deck can come in handy, such as if you're looking for an Artful Dodge to flashback and swing for massive damage (pretty sweet, I came back from being 4 life to my opponent's 20; swinging with a Splinterfright and Ghoultree for 24 unblockable damage), pump up your creatures even more, or need another Gnaw to the Bone in the graveyard.
Merfolk Looter: Gives card advantage while throwing a creature or a flashback spell into the graveyard for you.
Skaab Ruinator: You basically never want to have to play him since he hurts your graveyard pretty badly, which affects you quite a bit. He's mainly situational, if you don't have any flyers to fight off your enemy, or if you need more board presence. The ability to play him from your graveyard is pretty nice, too.