No way it could happen, but you have to be on the draw
T1, draw
{Cavern of Souls} into {Champion of the Parish}
T2, draw
Forest into {Burning-Tree Emissary}, trigger, into {Infernal Plunge}, sac burning tree, play another Tree for {R}{R}, trigger a 3/3 champ, have {R}{R}{G}{G}, cast 2 {Giant Growth}'s and {Armed // Dangerous} for a 10/10 double strike Champ.
Lol