most op banned yugioh cards Forbidden/Limited List Card Destruction - YGO Ban

Regenerate Does Work Against Board Wipes Regenerate can absolutely save your Creatures from most board wipes, as long as the wipe specifically seeks to destroy Creatures and doesn't say "they can't be Regenerated." This is where cards like Wrap in Vigor and Golgari Charm truly earn their keep

may go into tens of dollars

The attachment only ends if something explicitly unattaches the Equipment or attaches it to another permanent (such as from you activating the shackle ability again)

others are created as fake antiques

His mint condition raw/ungraded cards regularly fetch prices 30-40% higher than their graded PSA 9 equivalent would fetch