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.

Sealeo · Mysterious Treasures 62/123

Sealeo (Mysterious Treasures 62/123), Uncommon, Stage1, 80 HP. Market price €0.23, unchanged this week. Illustrated by Kouki Saitou. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

It habitually spins things on its nose. By doing so, it learns textures and odors.

Sealeo (National Pokédex #364) first appeared in Pokémon Ruby and Sapphire (2002). Its earliest English cards in our catalogue are from 2004: Hidden Legends, Team Magma vs Team Aqua.

More Sealeo printings

Card text

Ice Rider — Choose 1 of your opponent's Pokémon. This attack does 30 damage to that Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Weekly price history

Week	Market price
2026-W31	€0.20
2026-W32	€0.17
2026-W33	€0.17
2026-W34	€0.19
2026-W35	€0.19
2026-W36	€0.20
2026-W37	€0.22
2026-W38	€0.21
2026-W39	€0.23
2026-W40	€0.23

Printings & variants

Normal — $0.34
Reverse Holo — $2.46

Price in context

Sealeo ranks #89 of the 119 priced cards in Mysterious Treasures. The median Uncommon in the set is €0.31. The 119 priced cards in Mysterious Treasures are worth €393.93 together; this card is less than 0.1% of that. The set’s value is unchanged this week. Over the last 10 weeks the set’s value went from €343.84 to €393.93 (+14.6%).

Top chases in Mysterious Treasures

Lucario 122 — €83.21
Time-Space Distortion 124 — €49.76
Magmortar 123 — €44.36
Electivire 121 — €30.45
Alakazam 2 — €24.44

Set value over 10 weeks · same 119 cards each week
Week	Set value
2026-W31	€343.84
2026-W32	€343.12
2026-W33	€343.75
2026-W34	€366.58
2026-W35	€366.63
2026-W36	€384.02
2026-W37	€386.60
2026-W38	€390.99
2026-W39	€393.93
2026-W40	€393.93