only give the former if it's needed.
git-svn-id: https://crawl-ref.svn.sourceforge.net/svnroot/crawl-ref/trunk@3816 c06c8d41-db1a-0410-9941-cceddc491573
FH6U4C6GZYCRPASKZC2X5LNXGKU56SJ2AOBCEO2X4DGMBE5TQADAC
LDUASYI655NEH3OVWWYYQ2UV4KVC5FAJOX4IIVJEKZ43S2KKMAGQC
K2CS6TCX2NDVL2ASEHGP4J4K4IJ6FP3ANNKTSIWVG43HPYSBX6ZQC
if (blessing_balms(mon))
if (coinflip() && blessing_balms(mon))