Your ideal hand will have 2 Elvish Spirit Guides, 1 Channel, 1 Soul Conduit, 1 Rod of Ruin (a forest would be great, too). A turn 1 kill would look like this: Removed your Elvish Spirit Guides from the game, giving you 2 green or you can drop one forest and remove one Spirit Guide. Cast Channel and spend 19 life, leaving you one life. Now you have 19 green mana. Use it for the colorless spells Rod of Ruin (4 CMC) and Soul Conduit (6 CMC). Exchange life totals with your opponent via the Conduit, giving you 20 and him/her 1 (6 CMC). Tap your Rod for 1 damage (3 CMC) and kill them. That uses all 19 mana that you originally had, no more and no less. According to a site I found, getting those 5 cards in your hand (or 6, with a Forest) will happen only 7 percent of the time. So you could mulligan up to 2 times. You can always go down to one life by getting your butt beat then pull out the Conduit and Rod. That seems to happen alot in my play testing. It's a shame the artifacts aren't Flash, then you can do a turn 0 kill.