It's not entirely useless but most people prefer to get exhaust or something instead. --- CreviceCretin - Mario games are for little kids grow up and kill something. ^ 164 people agree that it's ignorance at its finest.
As a tank support you shouldnt be getting minion kills unless you are replenshing health as Nunu with Q, and even then try to go for a full health seige minion. Heal would help you stay in lane longer. --- Support your local Poet