my first build and hope you like it.this build was made having in mind a devasting burst of damage sion.the plan is to use completly and take advantage of every skill he has.the point is to kill an enemy every time you stun him.for this guide to be succesfull you must be the secondary carry of your team.and your main goal is too kill every enemy you stun by the damage outputt of your shield explosion and your physical attacks as well.have also in mind to last hit good so you take hp from your ebrage passive.

Prior to the creation of the League of Legends, the city-states of Demacia and Noxus were locked in a brutal series of on-again-off-again wars that spanned the course of centuries. Both powers sought an advantage over the other, but Noxus was the city-state willing to forego conventional morality to achieve its goals. Only brute strength and the will to use it mattered to Noxus, and this is best exemplified in the murderous warrior, Sion. Used by the Noxians as a human battering ram, Sion would be sent thundering ahead of Noxian troops. He would mercilessly slaughter foes with his large double-bladed axe, ''Chopper''. His complete disregard for caution ultimately cost him his life, as he was captured and summarily executed by Demacian forces.

The Demacians thought that the beheading of Sion would be the end of his bloodthirsty ways. Death, however, was merely the beginning of Sion's rise to power. The famed Noxian assassin, Katarina, recovered Sion's remains and Noxian necromancers reanimated the behemoth to serve Noxus once again. Sion's reanimation actually bestowed new powers on him and increased the potency of his existing abilities, making him even more of a terror to behold on the battlefield. The Noxian High Command had a powerful new weapon in their hands - one they have brought to bear as a champion in the League of Legends. Even though Sion's increased powers would make him a powerful tool for the High Command's use outside the Fields of Justice, Noxus no longer risks losing one of their greatest champions in the League to chance or circumstance; Sion's days as a front-line fighter for Noxus' military conquests are at an end.

the runes are like this cause we want a quick kill and then with the cannibalism active to stay longer in fight dpsing fast and surviving from the damage we take through lifesteal.

pros
huge amount of phisycal and magic damage combined
good survivability
good ganger
cons
needs farm and feed
needs good and proper use of death's caress

here i will instruct how you must lay out your damage.you mainly try to spot your target before the fight begins you inisiate by activating your shield ,then you go close to him stun him and manually explode your shield while dps him with basic attacks.dont use cannibalism if you dont take damage or any damage that could kill you.when you kill your target if you are in a team fight spot the next one go into the enemys with your ulty and stun him and harass him .try always to use your shield as damage manually exploding it.for survivability you need only your ulty.well ofc if needed your shield surly can save you from lots of damage.try not to spamm your skills and dry out of mana.the goal is that you will get a takedown whenever you use your stun and the damage from your shield.

1st point at stun for a fb maybe.2d at shield for some push and more magic damage or survival,3d and 4th at enrage so you have damage and get more hp.after that you max your shield thats your mainly damage then your stun and finally your enrage.ofc ulty points at 6,11 and 16 lvls.

i get flash to use it mainly for ganking ,hiding in the bush activate your shield flash on the enemy if he is in distanse stun him and explode your shield then i use exhaust to finsh him off with hits and a stun if needed.
another good choice is cleanse if enemy has disables,take it instead of exhaust.
the combination of sion stun and shield explosion with the summoners spells flash and exhaust will give a kill every time if you play it right and when i say right timming and good target choice is everything.

LAST HIT ,period last is gold and on sion last hit also means more health so LAST HIT as hell the minions

so you initiate with stun, shield manually explode and finish your target with physical attacks or another stun if your cd is off.sry i didnt put much efort in this but i didnt had much time and its my first love to hear even the sortest comment of yours.