[shadow29]

12:1, you need 3.5 outs or so (rough estimation, without looking at any charts) to continue.

1.5 outs for BD flush.
3(.5)(2) for overcard outs.

Except I'm not sure that 3 outs is good for the overcards. I'd probably assign them 1.5 outs total. That's 3 outs, you need 14:1 to continue. Thus, you have to make up a total of 1 BB (2 SBs). Which is easy to do.

What makes this hand difficult, however, is that you might have to pay 4 SBs to see the turn. If everyone calls, there are 4+4+4+2+20 SBs in the pot. That's 34:2, which is 17.5:1. Even better. My math might be wrong here, though. I think that we have a call here. Pot is ginormous.

Also, something that turns this hand into a call is that if you miss on the turn, you'll fold. That's important, I forget why, though.