Intense standard combo thing

[DylanW18]

I was play testing my BUG deck against a Homebrew mono R deck and his plays were as follows


T1: {Legion Loyalist}, hit for 1
T 2: {Ash Zealot} hit for 3
T3: QUADRUPLE {Burning Tree Emissary}! Into {Nykthos, Shrine to Nyx} into {Volcanic Geyser} for 9!!!! Then swing for 3 again! I lost next turn...