Crimson Eye

http://leaguecraft.com/teambuilder/2638ecbd41a0a7d4a14db8c24b22d166

cleaned this up a bit and published it, see here:
http://leaguecraft.com/strategies/team/702-powerhouse-damage-and-survivability-balanced-team-with-jungle-and-support.xhtml

why don't you guys use this tool and put together some team builds that you think would be powerful, but also exploit some of the classes we typically have available

For example:
we frequently have a rammus player with us who solely plays rammus

Rammus is a good champ and certain other champs will be able to exploit rammus's abilities on a team -- for example i found that morganna works well with rammus because rammus can taunt htem and draw them towards the team, then morgana can very easily land a skillshot and keep them there (preventing flash, etc)

also looking for a good jungle rammus guide... if someone can search for one.

akali
WW
galio
MF
Garen

Synergies
akali's aoe, Garen judgement, MF ult, sync with galio's ult

akali, ww for chasing
Tanky dps chars: akali, garen, ww,

anti carry:
akali, ww

anti tank
ww

jungle control

team lacks support chars
team lacks map mobility/control

excels in burst dps, groupfights

ccs/disables:
Garen: silence
akali: chain slows (with rylais)
WW: exhaust, ult
Galio, Ult,Q,
MF: make it rain

Just a little thing with Anivia:

I'd probably not get Haunting Guise and Void Staff since they changed MPen a little while back.

Now, you subtract the flat stuff first, then do the percent pen stuff. Basically, Void Staff reduces the MPen from all flat sources by 40%, including runes and Guise.

So, I'd get either flat pen or percent, but not both. If you're already getting Sorc Shoes, then Haunting Guise would be the most +damage if they have 70 MR or less, and Void Staff would be better at > 70.

If they have < 60 MR, I'd pair the Guise with an Abyssal Scepter to push them into the negatives of MR and really do some damage.

Otherwise, I've been using Rylais to stack with the snares Anivia gets naturally (like you pointed out) and its been working out great, especially when other members of my team can do enough damage to take advantage of it.