The Halosar Trap

Hello everyone, today I will be teaching you the halosar trap, so, it starts like this

White: d4

Black: d5

White: e4 

Black: dxe4

White: Nc3

Black: Nf6

White: f3

Black: exf3

White: Qxf3

Black: Qxd4

White: Be3

Black: Qb4

White: 0-0-0

Black: Bg4

White: Nb5

Black: Bf3

White: Nc7

And that is the Halosar trap, I tried it against a high rated player and he actually fell for it.