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.

Xerneas · XY Black Star Promos XY31/211

Xerneas (XY Black Star Promos XY31/211), Promo, Basic, 130 HP. Market price €8.69, unchanged this week. Illustrated by Masakazu Fukuda. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Legends say it can share eternal life. It slept for a thousand years in the form of a tree before its revival.

Xerneas (National Pokédex #716) first appeared in Pokémon X and Y (2013). Its earliest English cards in our catalogue are from 2013: XY Black Star Promos.

More Xerneas printings

Card text

Aurora Gain 50 — During your opponent's next turn, this Pokémon has no Weakness.
Light of Life 80＋ — If your opponent has Yveltal (including Yveltal-EX) in play, this attack does 40 more damage.

Weekly price history

Week	Market price
2026-W31	€9.83
2026-W32	€9.28
2026-W33	€9.28
2026-W34	€8.61
2026-W35	€8.61
2026-W36	€8.61
2026-W37	€8.69
2026-W38	€8.69
2026-W39	€8.69
2026-W40	€8.69

Price in context

Xerneas ranks #131 of the 191 priced cards in XY Black Star Promos. The median Promo in the set is €14.93. The 191 priced cards in XY Black Star Promos are worth €25508.66 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 €25536.76 to €25508.66 (-0.1%).

Top chases in XY Black Star Promos

Mewtwo XY101 — €4675.00
Mewtwo EX XY107 — €4675.00
Mewtwo EX XY125 — €4675.00
Mew XY192 — €4675.00
Greninja EX XY20 — €542.50

Set value over 10 weeks · same 191 cards each week
Week	Set value
2026-W31	€25536.76
2026-W32	€25624.51
2026-W33	€25613.97
2026-W34	€25668.95
2026-W35	€25671.90
2026-W36	€25701.88
2026-W37	€25460.42
2026-W38	€25481.23
2026-W39	€25508.66
2026-W40	€25508.66