Plastic card hot pack.
I purchase this hobby hot pack of 2015 Topps Allen & Ginter World's Champions Baseball for only $4.25.

That hot pack is guaranteed to contain a "plastic 10th Anniversary parallel."
Base Cards
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5 - Craig Kimbrel

It took Kimbrel only 318 games to record his 200th career save.
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15 - Justin Verlander

Verlander. The man who threw a 94-MPH fastball on Jordany Valdespin's nuts during spring training of 2013.
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275 - Billy Hamilton

In 2015, Hamilton became the second MLB player of all-time to steal six bases in the first three games of a season.
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342 - Josh Donaldson

During the 2015 season, Donaldson earned the American League Most Valuable Player and Hank Aaron Awards.
Insert Cards
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Mini 15 - Justin Verlander

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SP-21 - Aroldis Chapman

Chapman threw a stunning 102 MPH fastball in his first MLB game on August 31, 2010.
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10th Anniversary Issue Buyback 2012 Topps Allen & Ginter Mini 46 Jarrod Saltalamacchia (odds 1:24)

Saltalamacchia.

Some collectors views non-autographed buyback cards as a "gimmick," but I think that additional tier is worth collecting.
I pulled a base and mini of the same player to make a desirable lot, and that Saltalamacchia card is pretty cool because it changed his name to "Altalamacchia" on the front of the card.