Sion is the champ that rather than farms creeps, farms champions, although he isn't used much in ranked play, you can dominate anyone and everyone that gets in your way. Similar to Karthus (not really), press "r" and win. Sion ultimate is OP, OP I tell ya, OP. At rank 3, you're probably dishing out 500+ damage per hit at around 1.2 - 1.3 hits/second, and healing all that back as health (unlike AP Sion, your ultimate is actually useful). Even at rank 1 your ultimate can allow you to easily dominate a 2v1 lane.

I picked these runes cuz teh runes work.

Ummm, for reds I picked attack speed because while dishing out 900 crits, you are not going to care if you do 2 more damage. You are going to care if you attack at 0.532 atks/sec, with this you deal tons of damage and you do it quickly.

For teh yellowz, I picked them armor so you can kill everyone and anyone in sight early game while taking less damage, especially in a 2v1 lane.

For teh bluez, I picked mana regen because your "q" uses like 1/2 your bar of mana, so unless you want to buy mana pots or recall every 2 mins, get these, they are important for your early game.

You want to dish out damage so the 21 in offense, and you want to defend yourself so 9 in defense, screw utility.

Boots + 3 pots
Okay, so you want to be able to chase everyone and anyone down early game, then stay in lane so yeah.

Double Doran's
Its really good early game, get rid of them if you want any other items.

Upgraded boots
You need these.

Bloodthirster
Gives you extra damage and life steal.

The rest:
Bonus AD and then some sustain with your warmogs.

You want your Q first because if you want to kill people then you need to stun them so they don't get a way. Okay, so you should NOT be using stun in the middle of a fight between people, use it to initiate OR use it at the end to ensure killing them.

Your E
Keep it toggled at all times, gives you bonus hp, lots of AD, need it.

Your W
Yeah... use it for farming ( go in with your shield and then kill the minion to avoid poke)

Your R
PRESS R AND WIN I WILL TYPE IN CAPS TO EMPHASIZE THIS MOVE!
BEST ULTIMATE IN THE GAME

TOWER DIVING, STUN THEM UNDER TOWER, POP ULT KILL THEM, PRESS W AND GET OUT, DONT DO THIS AT LOW LEVELS.

IN TEAMFIGHTS, HEAL YOUR TEAM BY POPPING YOUR ULT YOU HEAL THEM FOR 25 / 37.5 / 50 % OF WHAT YOU DEAL.

2V1 LANE. POP ULT KILL THEM

WATCH OUT FOR IGNITE, RUN WHEN YOU ARE IGNITED, UNLESS IT IS 1V1.

Use Sion. No more