Across four tournaments, all of the third and fourth-place competitors were given this card as their prize, and in a rare case for a card this old, we currently know where all eight of them are
We even have some activated abilities, like Grist, the Hunger TideGrist, the Hunger Tide, Professor OnyxProfessor Onyx, Wrenn and SevenWrenn and Seven, and Skola GrovedancerSkola Grovedancer, as well as some nonpermanent spells like Grapple with the PastGrapple with the Past, MulchMulch, and Grisly SalvageGrisly Salvage
Include a classic Death and Taxes theme to make things difficult for your opponents, and you should be able to get the most out of Ardenn and Rebbec very quickly
11: There is a card that begins, If an opponent would begin an extra turn 12: There is a new card with the Gravestorm mechanic