Talk:Gameplay/@comment-10421110-20160614064017/@comment-839017-20160614070654

In order:

Befreien's ability procs on attack declaration, not during the attack itself. That means sure, the opponent COULD nullify the attack in response to his ability activating, but the effect would still go through and destroy the monster good ol' Bef attacked in the first place.

Next, Penetrate damage technically occurs in battle, when the monster is considered "destroyed" yet also before it's placed in the Drop Zone, meaning the center is still occupied so cards that demand an open center like BDS cannot be cast.