legacy weapon help

[Nosta]

my gm as told me if i can build a legacy weapon i like that is strong yet balanced he'll work it in to my chracters plot my only trouble is i have no idea on how to do this. help please marshal/ warblade gestat

[Crake]

Do you actually have the weapons of legacy book? Because it's all in there. Give it a read, then come back with at least an idea that we can work with.