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.

Groudon ex · Nintendo Black Star Promos 2/40

Groudon ex (Nintendo Black Star Promos 2/40), Common, Basic, 120 HP. Market price $30.52, down 3.2% this week. Illustrated by Kazuo Yazawa. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Groudon (National Pokédex #383) first appeared in Pokémon Ruby and Sapphire (2002). Its earliest English cards in our catalogue are from 2003: Nintendo Black Star Promos.

More Groudon ex printings

Groudon ex · Crystal Guardians — €109.01
Groudon ex · Hidden Legends — €86.24
Groudon ex · Nintendo Black Star Promos — $250.83

Card text

Major Earthquake 80 — Discard a Fighting Energy card attached to Groudon ex. Does 10 damage to your Benched Pokémon. (Don't apply Weakness and Resistance for Benched Pokémon.)

Weekly price history

Week	Market price
2026-W36	$31.15
2026-W37	$31.39
2026-W38	$30.39
2026-W39	$31.52
2026-W40	$30.52

Printings & variants

Holo — $130.75
Normal — $30.52

Price in context

Groudon ex ranks #26 of the 34 priced cards in Nintendo Black Star Promos. The median Common in the set is $67.60. The 34 priced cards in Nintendo Black Star Promos are worth $4822.55 together; this card is 0.63% of that. The set’s value is up 1.2% this week. Over the last 5 weeks the set’s value went from $4471.61 to $4822.55 (+7.8%).

Top chases in Nintendo Black Star Promos

Tropical Tidal Wave 36 — $1400.00
Rayquaza ex 39 — $580.03
Pikachu δ 35 — $261.08
Groudon ex 38 — $250.83
Tropical Wind 26 — $223.50

Set value over 5 weeks · same 34 cards each week
Week	Set value
2026-W36	$4471.61
2026-W37	$4485.31
2026-W38	$4601.71
2026-W39	$4765.92
2026-W40	$4822.55

Other Groudon ex cards

There are 3 other cards named Groudon ex across 3 sets.

Crystal Guardians 93 (2006) · Rare — €109.01
Hidden Legends 93 (2004) · Rare — €86.24
Nintendo Black Star Promos 38 (2003) · Common — $250.83

About the illustrator

Kazuo Yazawa has illustrated 11 cards across 8 sets.

Team Magma's Groudon · Team Magma vs Team Aqua — €16.71
Pokémon Park · POP Series 2 — €5.57
Team Aqua's Chinchou · Team Magma vs Team Aqua — €1.24
Lum Berry · Emerald — €0.78
Oran Berry · Ruby & Sapphire — €0.64

More from Nintendo Black Star Promos

← Previous card: Kyogre ex 1 · Next card: Treecko 3 →

Questions

How much is Groudon ex 2/40 worth?

Groudon ex from Nintendo Black Star Promos (2/40) has a market estimate of $30.52, down 3.2% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Groudon ex 2/40 rare?

It is a Common from Nintendo Black Star Promos, a 40-card set.

Is Groudon ex 2/40 tournament legal?

Groudon ex 2/40 has rotated out of the current formats.

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