Forum:Gladiator Beast: Need to survive to use effect?

From what I can understand, the Gladiator Beast needs to survive attacking or being attacked since it says "At the end of the Battle Phase", but my opponent claims it does not need to and that it will use it's during the time it is attacking or being attacked.

Which is true? Why? NickTheForbiddenOne (talk • contribs) 17:47, January 31, 2014 (UTC)