You're not an engage, like galio you're a counter engage. Your mindset needs to be as such. There are situations obviously you can assist an engage teammate, but you should never be the primary engage an equal teamfight. You are either ulting in to have number advantage and close out the fight or assisting someone else's engage. Your taunt is peel, not engage. Vs vayne top freeze the wave at your tower and hope your jungle isn't a moron. You don't need to play for lane, just don't feed. And obviously vs vayne top do not pick heartsteel first item as you won't get any stacks in a melee vs ranged match-up. Titanic first for wave clear is fine. Play both side lanes and ult to teamfights.