(Bevy of Beebles) Backslide Bag Check Baleful Stare Ballad of the Black Flag Bane's Contingency Baral, Chief of Compliance Barrin, Tolarian Archmage Baxter, Fly in the Ointment Bearer of Overwhelming Truths Befuddle Behold the Multiverse Bellowing Crier Benthic Biomancer Benthic Criminologists Bespoke Battlewagon Betrayal Bewilder Bident of Thassa Birthday Escape Bitter Chill Blinding Spray Blink of an Eye Blitzball Stadium
The card is so scarce that it barely has a stable market value since sales happen so rarely
They also come with stamps like STAFF, TOP 8 and CHAMPION
Not that spell specifically means the card is on the stack
In many cases, it's said that the Base set of Missing-Rarity-Symbol is first printed
I would suggest listing cards above a threshold value or rarity individually to maximize your value from them, potentially sending for grading and auction through fanatics or similar depending on the specifics because of their quicker turn around