Cornerstone Mask Ogerpon ex 199/167 — Twilight Masquerade

Cornerstone Mask Ogerpon ex 199/167 is card 199 in Twilight Masquerade, numbered past the set's printed total of 167 — so it's a secret rare. It's one of 21 Ultra Rare cards in the set — 9% of 226. There are 5 English cards named “Cornerstone Mask Ogerpon ex”. This is the 2nd; the first was in Twilight Masquerade (2024). Counting every version, Teal Mask Ogerpon has 28 English cards. It has 210 HP. 5ban Graphics illustrated 14 cards in Twilight Masquerade and 1630 English cards in total.

It's legal in the 2026–27 Standard format (regulation mark H). Attacks: Demolish (3 Energy, 140 damage). Weakness: Grass ×2; retreat cost 1.

More: every Cornerstone Mask Ogerpon ex version, rarest first · Teal Mask Ogerpon chase-card checklist · how to beat Cornerstone Mask Ogerpon ex · Teal Mask Ogerpon deck stats · full Twilight Masquerade list

Is Cornerstone Mask Ogerpon ex 199/167 worth anything?

We don't have a live market price for this card at the moment. The price you'll get in the UK depends mostly on condition: check the corners, edges and surface, and whether the artwork is well centred. Damaged cards sell for much less, while professionally graded copies in top condition can sell for far more.

To be sure you have the right card, match the set symbol and the number 199/167 printed at the bottom of your card. There are 28 different Teal Mask Ogerpon cards, so the number matters. Then compare completed eBay UK listings — sold prices, not asking prices — for copies in similar condition.