Can I build a deck together with friends on TCGSwap?

Yes. Every deck on TCGSwap has a Collaboration Space. You can invite up to 5 friends; they can suggest card changes, discuss ideas, and playtest proposals. You review and apply suggestions before anything changes in your deck.

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.

Can collaborators chat and discuss the deck?

Yes. The Collaboration Space has a shared group discussion thread for the whole deck, plus a per-suggestion Q&A thread for each proposal. You can @mention teammates and link specific cards inline.

Is collaborative deck building free?

Yes, collaboration is free for all TCGSwap users during beta. You can invite up to 5 collaborators per deck.

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.

Walrein ex · Power Keepers 99/108

Walrein ex (Power Keepers 99/108), Rare, 150 HP. Market price €24.03, up 0.2% this week. Illustrated by Ryo Ueda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Poke-POWER: Chilling Breath — Once during your turn, when you play Walrein ex from your hand to evolve 1 of your Pokémon, you may use this power. Your opponent can't play any Trainer cards from his or her hand during your opponent's next turn.
Wreck 70+ — If there is any Stadium card in play, this attack does 70 damage plus 20 more damage. Discard that Stadium card.

Weekly price history

Week	Market price
2026-W31	€25.14
2026-W32	€24.94
2026-W33	€24.94
2026-W34	€23.47
2026-W35	€23.47
2026-W36	€24.65
2026-W37	€23.62
2026-W38	€23.99
2026-W39	€24.03

Printings & variants

Holo — $54.60

Questions

How much is Walrein ex 99/108 worth?

Walrein ex from Power Keepers (99/108) has a market estimate of €24.03, up 0.2% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Walrein ex 99/108 rare?

It is a Rare from Power Keepers, a 108-card set.

Is Walrein ex 99/108 tournament legal?

Walrein ex 99/108 has rotated out of the current formats.

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