T1: This.
T2: 4 Burning-Tree Emissary, Madcap Skills on FSD. Swing for 8.
T3: You have no hand. But it doesn't matter. You swing with the 4/1 FSD and the 4 BTEs for 12. It is lethal unless they can chump one of the BTEs.
T4: Unless you are on the draw and they supreme verdict before your T4, they are dead. If they do verdict, you have Fanatic of Mogis, Magma Jet, Lightning Strike, Ash Zealot, Chandra's Phoenix, or Rakdos Shredfreak to finish them.