Black's first move, which seems like a punch in the stomach, ironically gives White an eye, but it also leaves White helpless after Black plays magari with . Black can capture the White stones with a live shape.
Deebster: I'm confused as to why/when this move would be used. The shape appears to be almost dead, and doesn't kill it. Furthermore, White could play tenuki and leave the group until the endgame, or as a small ko threat. Even if this were a semeai it wouldn't help.
Why not just play straight off?