I test my bombs against the ultimate bomb tester even due to it being strong for its size.
no need for all this fancy stuff, most vaults forget the soap. some high-life plasma in a tungsten shell, put some virus on the outer layer. the virus spreads, detonates itself on the plasma, throws itself everywhere, then burns itself, destroying everything and leaving no trace.
Entity what are you going on about.
I did not say mine was INDESTRUCTIBLE it was just strong.