of course you're not, you're a cyber angel player that bandwagoned to sylvans then to fur hires then to amazons then to koaki,now satan what are you now? dino? AG? hmmm...
It sounds like it wasn’t destruction but summon negation which sends it to the GY anyway. Summon negation overrides diamond core’s protection effect. Diamond core can’t protect anything if you don’t have anything on your field.
Satan
Satan