Early game is fairly easy to figure out. Get items, go to lane. Leash if your jg needs it. Dont try to initiate fights yet, play it safe, tank shots and proc your support item. Use your e to peel most of the time. Once you get to your first set of core items, begin to initiate fights. taunt anybody who goes for farm. Bully as much as possible. If they dive you under turret. hit your exhaust or your e, and they will die. Simple.

Mid game is a bit more tricky. Start roaming after your get your boots. Look at fights your teammates are in. Don't try to ult everybody in a fight, sometimes if you did it would lead to an enemy double kill, or a wasted ult. Always ask yourseld if your teammate can handle it. If a teammate is on low health and the enemy laner is pushed up, ult her and taunt so they can get a kill. Don't abandon bot lane though, go back frequently and try to get towers with your adc.

similar to mid game, but just ulting all fights. ALL. THE. FIGHTS. ENGAGE ON ALL THE ENEMIES! HAHAHAHAHAHAHAHA!!!

Just ult the health team members and taunt people under turret. You are pretty tanky at this point, so you can take quite a few shots before needing to go back. Even then warmogs should keep you alive for a while.