Talk:Rumble/@comment-3477331-20111010152759/@comment-3546228-20111010210843

Not sure if I get your question. Multi target spells proc 33% of your spell vamp. Single target spells proc 100% of your spell vamp. Electro-harpoon will proc 100% of your spell vamp because it hits 1 target, Q and ult will proc 33% of it because they can hit more than 1 target.