"G:M" R, Destroy this foundation: After an attack is played, it gets +1 or -1 to all the card's keyword ratings (your choice),
This works with the Breaker keyword, right? (eg: Leg Slash)
I would think the timing would be: Attempt Leg Slash as a block, make check, pass check, respond with Need to Destroy, as the attack has now been played, and then respond with Breaker, as the attack has now been considered blocked.
Am I correct?