I've just started playing ranked with some friends and we've all been settling into characters that work out well. So our bans are generally rammus, singed, and tryndamere, and our picks in order are...

1. Sion (AD/AS)
2. Cho'gath (tanky caster) or Yorick (me, depending on their first pick)
3. Lux

Our goals are hard CC to consistently lock down the enemy team. The Cho'gath/Lux blow all your spells onto them works ridiculously well in nuking and allows Sion to go to town with autos. In the instances that aoe skillshots will not be as reliable and we need more consistent dmg I go Yorick top lane.

Any thoughts on this comp? Places you could exploit? We've been doing reasonably well with it but have lost a couple games. Do you think Cho or Yorick works better with Sion and Lux?

How do you build the different champs?

Sion: AD, AP or tanky?
Cho: AP caster or tanky?

Sion is AD/AS. Phantom dancer, zerk greaves, infinity edge to start. Tanky caster for Chogath. (RoA and then all tanky from there.)

Bump.

Only recommend going Full AP with sion.

AP sion hmmm =)

Low dmg, No jungler, low AOE. All but lux need way to many items to even begin being usefull