Void is a different mechanic from the same Edge of Eternities set that cares about whether someone has warped a spell or a nonland permanent has left the battlefield , and it can be found on end step and attack triggers, among others
Inconveniently, I realise it about 75% of the way through a games campaign
IYes you can exile a card in exile, it becomes a newly exiled object
The extra build potential with Inversion and it being a little bit more unusual makes me prefer it but it is hard to call it better overall
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This is cool as they can be placed on top of any non-special version of the Pokemon, meaning you can mix and match what base Pokemon you want to use and still get the benefits of the BREAK card without worry of losing out on aspects of the original card