[CLIENT] Description for Vampirism needs updating.
As of patch 6.9 (mage update), spellvamp no longer exists in League of Legends. Currently, Vampirism's description says "+2.0 Lifesteal and Spellvamp". It's a very small issue, but one that might confuse newer players. An easy fix would be renaming it to something like "heals for 2.0% of all damage dealt" (or "all physical and magic damage dealt" if you don't want it to work on true damage).
Thanks!