Pondering a caster supporting build, but I like hammers

Will Blessed Hammer take asvantage of reduced resistances?

Thank you,

Wincett

P.S. I did search and found no posts on this.. I searched for "Conviction and Blessed Hammer" So if anyone finds a post educate me on how you searched..

P.S.S. Yes, I know the damage of BH will be lower with this approach...