Start from the blue or red depending on where your adc is so he can pull. Your first gank should be on top or mid. Early game sion is weak but has great cc( stun + slow) so if an enemy pushes a lane gank and force at least a flash out of him if you cant get fb. Try to reach 6 lvl as fast as possible... ganks after 6 lvl are great.IMPORTANT: SAVE YOUR Q FOR THE ENEMY AFTER HE FLASHES... TRY TO SLOW HIM ONLY WITH E REMEMBER YOUR E CAN ALSO REACH AND SLOW THE ENEMY THROUGH MINIONS.

Mid game sion is a beast if built properly. Your ganks are amazing and your ult is perfect for starting teamfights they will never see it coming guys trust me tank sion is op! You just go in with ult than stun (decimating smash) and followed by soul furnace (slow after slow stun after stun the cc is crazy) if your team is a little coperative you will crash them.

Late game is around 40-45 min meaning full builds, broken inhibitors and it s all about teamfights. The item i recommend in last teamfight is guardian angel and if you used it already and it s on cooldown if you have enough money sell it and get warmorg or some other tanky iteam. You will have around 5 k hp + 700-800 hp from your farm....even if you manage somehow to die you can still tank A LOT OF DAMAGE with your passive. GL & HF in the battlefields summoners :)