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.

Ninja Boy · Steam Siege 103/114

Ninja Boy (Steam Siege 103/114), Uncommon. Market price €0.12, up 9.1% this week. Illustrated by Megumi Mizutani. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Card text

Choose 1 of your Basic Pokémon in play. Search your deck for a Basic Pokémon and switch it with that Pokémon. (Any attached cards, damage counters, Special Conditions, turns in play, and any other effects remain on the new Pokémon.) Shuffle the first Pokémon into your deck.

Weekly price history

Week	Market price
2026-W31	€0.09
2026-W32	€0.11
2026-W33	€0.11
2026-W34	€0.10
2026-W35	€0.10
2026-W36	€0.10
2026-W37	€0.10
2026-W38	€0.11
2026-W39	€0.12

Printings & variants

Normal — $0.14

Questions

How much is Ninja Boy 103/114 worth?

Ninja Boy from Steam Siege (103/114) has a market estimate of €0.12, up 9.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Ninja Boy 103/114 rare?

It is an Uncommon from Steam Siege, a 114-card set.

Is Ninja Boy 103/114 tournament legal?

Ninja Boy 103/114 is legal in Expanded.

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