lifesteal

i found that when i would play varus i dont gain life from the magic damage on my blight pasive's through lifesteal or spell vamp. i didnt know if this was a glitch or somthing that was avoded or was not thought of to be added. also he dosin't gain anything from spellvamp oh his blight stacks i would think he would because it is a spell and it is activated from his other spells.