Win? Sir, this is Commander. Who wants to win?
CORaven
[[Sire of Insanity]] is a great target and can really change the game. Not overly liked however.
I also recommend JumpStart (and by extension JumpStart 'cube' once you are a good bit more familiar with the game). Once you have it built is is a great way to just pick up and play.
I agree with others that pauper is a great format to get into as it can be very price assessable.
However I would like to make an alternative suggestion - JumpStart (or a mini JumpStart Cube if your group is very interested). The biggest benefit to this format is the sheer variety that you can have in games over the course of an evening of playing. It is very easy to pick up and play from a players perspective and can be treated like a board game. It will require someone doing a small bit of research on what packs you need to buy, or what singles you need if building a custom list.
I am not sure that there is a need for a whole community to be centred around proxies. What would be the purpose of it? I do think however it would be nice to have a discussion about some good resources for proxies and tokens.