• $3.74Market priceOct 12, 2026
  • 1 in 318PacksChance per pack
  • $2,916Average cost to pullAt $9.18 a pack
  • Ultra RareRarity21 cards share it

Your odds of pulling Cornerstone Mask Ogerpon ex

Chance of at least one copy, assuming every Ultra Rare in the set is equally likely.

How we measured →
ProductPacksChanceMarket price
1 pack1<1%$9.18
Booster bundle62%$75.84
Elite Trainer Box93%$107.40
Pokémon Center ETB113%—
Booster box3611%$340.68

220 packs give you an even chance, and 731 packs a 90% chance. Allowing for sampling error, the true rate is likely between 1 in 294 and 1 in 344 packs. Try the how many packs calculator for other targets.

Open packs or buy the single?

Buy the single$3.74
Open packs for it, on average$2,916

Buying the single is cheaper: opening packs for it costs about 779.8× its price on average. That's 318 packs at $9.18 (today's market price for a pack). The open-or-buy calculator counts the value of everything else you'd pull.

Price history

Daily TCGplayer market price since Oct 12, 2026.

Not enough daily prices recorded yet. The chart appears after a second day.

Other Cornerstone Mask Ogerpon ex cards

Quick answers

How rare is Cornerstone Mask Ogerpon ex in Twilight Masquerade?
About 1 in 318 packs contain it, assuming every Ultra Rare is equally likely. Open 220 packs for an even chance, or 731 for a 90% chance.
How much is Cornerstone Mask Ogerpon ex (#199) worth?
About $3.74 at TCGplayer market prices on Oct 12, 2026.
Is it cheaper to buy Cornerstone Mask Ogerpon ex or open packs for it?
Buying the single is cheaper: opening packs for it costs about 779.8× its price on average. At $9.18 a pack (today's market price for a pack), you'd spend about $2,916 on average to pull it.
What other Cornerstone Mask Ogerpon ex cards are in Twilight Masquerade?
#215 (Special Illustration Rare, $10.96).

Prices: Scrydex, Oct 12, 2026. Card images are shown for identification. Pull rates come from the verified openings on our Twilight Masquerade page.