Sion is a tanky AD or AP zombie capable of jungling top lane or support. Sion has high sustain with ad damage which is good for top lane. AP helps him get more burst and sustain his allies with powerful shields. If Sion gets life steal early game he can constantly have his enrage on and get lots of extra health and deal TONS of sustain damage and can be a powerful jungler. When Sion uses his ult it gives him 50% attack speed 50/75/100% life steal and heals nearby allies for 50% of the damage he deals. This makes a Ravenous hydra a good item because in a teamfight when you use your ult because your allies get healed and your enemies crumble before you.

In a fight you want to quickly fire your Q to your enemy run in turning enrage on and giving yourself a shield. After lvl 6 you also want to use your ult this maximizes your sustain and durability by making it so that they will have a tough time killing you because of your shield and massive lifesteal and spellvamp.

In ranked play you want to try to go top lane. see if you can ban Shen,Aatrox,Darius,or Blitz these are really annoying opposing top laners and this will make your life easier. other than that dodge skill shots before teamfights and you should have high health and be harder for the other team to focus down.

-Sion is tanky but squishyer early game
-Sion can get high health from his enrage but he has to get a lot of cs for this to be so
-Sion is capable of many positions but each requires a different build.

Sion is capable of when his ult is on sustaining insane amounts of damage without taking much of it as long as he is fighting. There's a reason why Sion is called a living battering ram in his lore ITS BECAUSE HE IS!

Sion is a powerful bruiser that sustains massive damage especially with his ult on later in the game. Sion can go top,jungle,or support Sion deals mainly sustain damage with AD but more burst with AP.