[Buckmulligan]

Let's say we have an extremely marginal hand in the BB; something like T9. We'll say that either the button open raises or the SB open raises, either way we'll assume calling his raise puts us heads up. We'll also assume that villain is aggressive enough to understand the concept of blind stealing.

Flop comes: AJ4, KQ7, or AQ8.
We check raise.

I think this is extremely useful. Essentially, in a defense situation we have added bluffing equity because we benefit from scary boards when villain misses (and he's betting that flop whether he hits or not. In otherwords, we can pay an extra BB on the flop to purchase the pot on scary boards whenever the stealer misses.