The value is great, but this card has been banned from Historic and Legacy formats
RD/GRD2-JP028 Advance Lock/Tribute Lock Normal Trap Card [Requirement] When your opponent Normal Summons a Level 5 or higher monster while your LP is lower than your opponents
Sefris of the Hidden Ways ( Adventures in the Forgotten Realms Commander) Sefris hopes to earn knowledge and magical power on her adventures
However, selling one booster box at a higher price point can yield higher returns
If you do, search your deck for up to one grade 3 card with Gavrail in its card name, reveal it to your opponent, put it into your hand, shuffle your deck, choose a card from your hand, and discard it
It wasnt exactly tied to a single event because these tournaments spanned multiple locations