Man trying to create weapon to kill God, Set in England, first in a series

[Michael]

Read in the mid 2000s.
Dead tree.
Young Adult novel
The heros are teens, the villain is older. The villain is trying to put together a weapon to kill God.
The title of the sequel had the work "street" in it.

[Kris]

Michael, can you tell us about the weapon - what's it made of, how it works? (Spoilers are okay - just give us a clear warning before revealing a spoiler.)

Is this science fiction for young adults (teens)?

Are there fantastical or alien creature, or humans with special powers?

[Michael]

It was some sort of scepter and the bad guy was collecting parts for it.
And it is science fiction for teens.
And I think the bad guy had some powers, but no aliens or fantastical creatures.

[Ayshe]

Maybe Shadowmancer?

[Lobstergirl, au gratin]

Michael, was your book "Shadowmancer" or are you still looking?