Can I build a deck together with friends on TCGSwap?

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How does deck collaboration work?

It works like a pull request for your deck. Collaborators open the deck editor, make their proposed changes, and submit a suggestion with a note. You get notified, open the comparison view to see exactly what they changed, and choose to apply all, cherry-pick individual cards, or decline. Nothing changes in your deck until you approve it.

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Does TCGSwap work for MTG, Pokémon, Yu-Gi-Oh and One Piece collaboration?

Yes. The Collaboration Space supports all four games — Magic: The Gathering, Pokémon TCG, Yu-Gi-Oh and One Piece. Format validation and card prices are included for each game.

Cornerstone Mask Ogerpon ex · Twilight Masquerade 199/167

Cornerstone Mask Ogerpon ex (Twilight Masquerade 199/167), Ultra Rare, Basic, 210 HP. Market price €3.55, down 2.7% this week. Illustrated by 5ban Graphics. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Ability: Cornerstone Stance — Prevent all damage from attacks done to this Pokémon by your opponent's Pokémon that have an Ability.
Demolish 140 — This attack's damage isn't affected by Weakness or Resistance, or by any effects on your opponent's Active Pokémon.

Weekly price history

Week	Market price
2026-W31	€3.84
2026-W32	€3.70
2026-W33	€3.69
2026-W34	€3.58
2026-W35	€3.56
2026-W36	€3.63
2026-W37	€3.61
2026-W38	€3.65
2026-W39	€3.55

Printings & variants

Holo — $3.42

Questions

How much is Cornerstone Mask Ogerpon ex 199/167 worth?

Cornerstone Mask Ogerpon ex from Twilight Masquerade (199/167) has a market estimate of €3.55, down 2.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Cornerstone Mask Ogerpon ex 199/167 rare?

It is an Ultra Rare from Twilight Masquerade, a 167-card set.

Is Cornerstone Mask Ogerpon ex 199/167 tournament legal?

Cornerstone Mask Ogerpon ex 199/167 is legal in Standard and Expanded.

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