Obedience ruling

This is a very simple question. Do you have to block in order to play Obedience? The question arose when player A attempted to Bums Rush player B's older vampire at stealth. Player B had no intercept, but played Obedience to cancel combat. The card text doesn't state that you must block, but player A believes it is just understood that you must successfully block first. Who is right?

You don't have to succesfully block in order to use Obedience, you only have to be able to play reaction cards (be untapped or use reaction which would allow you to play rections/untap your vampire).

Jannu wrote:

You don't have to succesfully block in order to use Obedience, you only have to be able to play reaction cards (be untapped or use reaction which would allow you to play rections/untap your vampire).

Correct.
This didn't change since last month .