4 Color Deathspeaker. Mulligan lands to get an Earth and an Air threshold in opening. If you start with one each on those you should be fine. Control the board and do incremental damage until you get to your heavy hitters. Hydra is hard to remove (especially if they wasted it on the early stuff) and Infernal Legion does 3 damage even if they kill it the next turn. If they don't it can be game over (work to get 9 damage through). Best start is with a Land Surveyor - if you get that you will have 5 lands to start and can just draw spells for most of the game.