PvP without random oponent

Is there any way in GW to fight 1x1 or btw teams, but without RANDOM oponent?
I ask cause I wanted to be able to pvp against my friends once in a while o.o (As we used to in other games XD)

You can scrimmage (friendly fight) with people in your guild hall. Just press Enter Battle in your Guild Hall and host a scrimmage. Your friends should either be part of your guild, invited as a guest or part of your alliance in order to scrimmage.

This can be done 1v1 style or in teams of up to 8. the teams must be ballanced numbers though.

Interesting, its default to any guild with Guild Hall? Or guild leader must buy sommething for it?

Last time I checked they didn't. You can have a 1vs8 if you want.

Any Guild Hall can do it.

This is true. I know I used to 1v3 a guy on my War.

I stand corrected on the number of players in a scrimmage

Yes, as long as you have a guild hall, you can scrimmage as much as you want. It's essentially a mock GvG in order to try builds without harming your guild rating.

So no, there is nothing that your guild leader needs to buy, other than the guild hall itself