turn four beatdown

use skarrgan pit-skulk to hit your opponent for more than fifteen by turn four. first, play the llanowar augur, then play a child of thorns and another creature on turn two. then on turn three, poke your opponent for one with child of thorns. then play skarrgan pit-skulk with the bloodthirst. next turn, sac the llanowar ougur to give the pit-skulk +3 +3, sac the child of thorns to give it +1 +1, convoke the skysweeper to give the pit-skulk +2 +2 with gather courage, then play three giant growths on it. it should be exactly fifteen damage, and unless they have a creature with power of fifteen or more, they cant block.