…
…
What a Union Arena booster box holds on average: 16 packs of 12 cards. The maker doesn't publish odds, so these are community estimates from case openings, the same ones our Open or Hold values use.
| Pull | Per box | Per case (12 boxes) |
|---|---|---|
| Box topper | 1 | 12 |
| 3-star parallel | 1 in 50 | 0.24 |
| 2-star parallel | 1 in 16 | 0.75 |
| 1-star parallel | 1 | 12 |
| Super Rare | 6 | 72 |
| Action Point | 2 | 24 |
| Rare | 10 | 120 |
| Uncommon | 48 | 576 |
| Common | 120 | 1440 |
Rates per box: about 6 Super Rares, 1 one-star parallel, 2 Action Points, one 2-star parallel per 16-box case, and 3-star parallels at a few per hundred boxes. Every box includes one box topper.
English Union Arena pull data is thin (a few boxes plus Japanese data), so this is a rough guide.
Rare silver/gold box toppers and special-art Action Point cards are left out because nobody has published how often they appear, so this estimate may be a little low.
Bulk commons and uncommons are counted at 5¢ each.
Sources
See what each Union Arena booster box is worth opened versus sealed, using these rates and today's prices.