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.

Herdier · Boundaries Crossed 121/149

Herdier (Boundaries Crossed 121/149), Uncommon, Stage1, 80 HP. Market price €0.32, up 10.3% this week. Illustrated by Masakazu Fukuda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

This very loyal Pokémon helps trainers, and it also takes care of other Pokémon.

Card text

Bite 20
Take Down 60 — This Pokémon does 10 damage to itself.

Weekly price history

Week	Market price
2026-W31	€0.28
2026-W32	€0.29
2026-W33	€0.29
2026-W34	€0.30
2026-W35	€0.30
2026-W36	€0.30
2026-W37	€0.29
2026-W38	€0.29
2026-W39	€0.32

Printings & variants

Normal — $0.53

Questions

How much is Herdier 121/149 worth?

Herdier from Boundaries Crossed (121/149) has a market estimate of €0.32, up 10.3% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Herdier 121/149 rare?

It is an Uncommon from Boundaries Crossed, a 149-card set.

Is Herdier 121/149 tournament legal?

Herdier 121/149 is legal in Expanded.

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