Last time I was here it was still Legend Blue (BBS is a much better name, if only because Legend must be gnashing with teeth somewhere) and I noticed that I version being played in T1ToC4 was fairly different in some ways (maindeck B2B, etc.). I don't play often enough to get a sense of any metagame I walk into, so I was wondering what a decent BBS deck would look like for an unknown metagame (I imagine I've missed many tech threads). For reference, here's the deck I've got sitting around:

5x Moxen
1x Sol Ring
1x Lotus
1x Grim Monolith

20x Islands

4x Mana Drain
4x FoF
4x Counterspell
4x Mana Leak
4x Force of Will
2x Misdirection
4x Morphling
1x Ancestral Recall
1x Time Walk

4x Powder Keg

Sideboard
4x B2B
2x Masticore
1x Capsize
2x Misdirection
3x Annul
3x ??? Generally Gainsay, BeB, or some other silver bullet

Like I said, it's pretty basic Legend Blue. Any thoughts/suggestions? Has the newest expansion changed this at all, I haven't really had time to take a good look at it.