1.e3 e6 2.Na3

Black can play:

2...b5 3.Qf3 (or 3.Nf3) 3...f5 4.Qh5+ g6 5.Qg5 (or 5.Qh4),

2...Bxa3,

2...Qh4 3.g3 Nf6 4.Bb5 c6 5.e4 Qh5 6.f3 Nd5 (or 6...Qg5).