The Dallas Mavericks are offering a once-in-a-lifetime experience for any NBA fan that unpacks a super rare Cooper Flagg card.The former college basketball standout is quickly becoming of the top names in professional basketball. However, with that fame comes a lot of responsibility, or in this case, a significant value for one of his rookie cards.MORE: Pablo Torre reveals another secret Kawhi Leonard Clippers sponsorship Dallas reveals that the franchise is willing to give a lucky fan an incredible prize package in exchange for a 1-of-1 Topps rookie card featuring Flagg. The winner receives at least six incredible prizes and experiences just for pulling the sports card.The former Duke Blue Devils star was drafted first overall in 2025 after his tremendous one-and-done season in Durham.MORE: NBAs best remaining free agents and where they should signMavs offer massive bounty for Cooper Flagg cardDallas Mavericks CEO Rick Welts talks with current Maverick Cooper Flagg prior to a press conference. Mandatory Credit: Raymond Carlin III-Imagn Images Credit: IMAGN IMAGES via Reuters Connect (Reuters)Flaggs popularity is undeniable after becoming the face of the Mavericks in the blink of an eye a year ago. Meanwhile, his stardom is skyrocketing as Dallas builds their future around him and guard Kyrie Irving.Its impossible to fathom what a Flagg 1-of-1 rookie card could be valued at considering how young his career is at this stage. However, the Mavericks are hoping to get possession of it in order to get it back to Flagg, whose autograph is on it.Experts in the sports card industry believe the card could eventually be worth millions as Flaggs career progresses.MORE:LaMelo Ball gave Cam Newtons old Charlotte apartment an out of this world motifEntire prize list for claiming cardDallas Mavericks forward Cooper Flagg reacts against the Phoenix Suns in the second half. Mandatory Credit: Mark J. Rebilas-Imagn Images Credit: IMAGN IMAGES via Reuters Connect (Reuters)That doesnt mean the lucky fan that pulls the card wont be handsomely rewarded though. The Mavericks are willing to offer season tickets, as well as a variety of other incredible prizes.Two lower-level season tickets to Mavericks home games for 32 yearsSigned game-worn Flagg rookie jerseyPost game photo opportunity with FlaggPrivate photo session with Larry OBrien Trophy and NBA Rookie of the Year awardVIP tour of the Mavericks facility and a team meet-and-greetPrivate experience at American Airlines Center for 10 guestsRoad trip for Mavericks game against Boston Celtics, including flight, game tickets and hotelEnjoy free coverage of the top news & trending stories with The Big Lead Newsletter