User blog comment:Green10000/Good faith weapons?/@comment-4726862-20140520144506

Defender Greatsword, Defender Greatsword, and Thorned Greatsword, all infused with Lightning. Thorned Greatsword with the actual Sunlight Blade and Defender Greatsword with the L2 self-buff.

Oh, and Defender Greatsword is good too.