I gave 1600 dust for darkbishop benedictus card but the card is free now and you didn’t give back my 1600 dust
The one in core will go away eventually, but the one you paid for, you get to keep forever.
Look into your Wild collection. The card is still there but it rotated out of standard this April.
It is still in standard right now because it became a core card. You do not own the card you see in your Standard collection. The card you yourself crafted and own is in Wild.