I am convinced that Boots of Antaeus are the best option for replacing blood stones. Here are two possible solutions, but paths and gem costs should be discussed. I prefer the second, but think that gem costs should be higher due to reinvig and regen effects which make it a good SC/thug equipment item.
1) Same paths and cost as boots
Code:
#selectitem 201 -- Boots of Antaeus
#constlevel 6
#name "Stone of Antaeus"
#descr "Some flavor text"
#copyspr 255 -- Blood stone sprite
#type 8 -- Misc item
#end
2) With blood stone's paths and cost
Code:
#selectitem 201 -- Boots of Antaeus
#constlevel 6
#mainpath 7 --
#mainlevel 3 -- B3
#secondarypath 3 --
#secondarylevel 2 -- E2
#name "Blood Stone"
#descr "Some flavor text"
#copyspr 255 -- Blood stone sprite
#type 8 -- Misc item
#end