The Parkhurst Set is one of my favorites of the year. I think the 21-22 version may have been Blaster only since I can't see anything with the pack odds for a hobby box. The Blaster Boxes are absolutely packed, with 12 packs of 10 cards each. 

Family Traditions was 1:15 blaster packs, or not quite one per blaster. 

Ice in Their Veins is a nice, frosty looking insert that was 1:10 or about one per blaster. 

Parkies were 1:6 packs so you'd average two per box. 

The Silver Border Parallels were 1:4 Blaster packs so you'd end up with 3 per blaster. 

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