See the Voice of Thunder PP here.
Rolling Echo allows you to repeat the attack the following round. If you use an AP to make the Rolling Echo attack, it goes from Close Burst 2 to Close Burst 3.
When you repeat the attack, is it a Close Burst 3 again, or does it go back to being a CB2? I.e. does repeating the attack mean it gets the same modifiers?
A related question, although it may have a different answer: After making the Rolling Echo attack, the Voice of Thunder is disarmed. At the start of the VoT's next turn, does the Rolling Echo repeat with the original modifiers of that implement, or does the repeat occur without the implement (and is therefore less powerful)?