I run an olivia deck, and i went the land destruction route, there is a fair amount of cheap LD in b/r: {stone rain}; {rain of tears}; {choking sands} etc... Also think about running a {wooden stake} and also {blazing torch}. {black sun zenith} {damnation} and {life's end} are effective black wipe spells, but a more localized spell that i find effective is {into the maw of hell} if you decide on a LD base. {strip mine} is also a killer universal LD bomb. Good luck man, hope it comes together