Kill healers, and dps. If you don't have great aim, harass, or get better aim. Don't waste time on tanks unless you sticky them, or need a fast ult charge. Always save 1 blink, and only recall to regain hp(unless the recall will secure a kill or 2) that last saved blink always comes in handy. You recharge a blink every 3 seconds, so you shouldn't be emptying yourself unless forced in a shit situation. Be aware constantly who's around. Goodluck !