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.

The Phantom Knights of Stained Greaves · Phantom Rage Premiere! promotional card 88544390/1

The Phantom Knights of Stained Greaves (Phantom Rage Premiere! promotional card 88544390/1), Common. Market price $0.22, up 4.8% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

If a "The Phantom Knights" monster(s) is Special Summoned to your field (except during the Damage Step): You can Special Summon this card from your hand, then you can increase the Level of this card by 1. You can banish this card from your GY; Special Summon 1 "The Phantom Knights" monster from your hand, except "The Phantom Knights of Stained Greaves", then you can increase its Level by 1. You can only use each effect of "The Phantom Knights of Stained Greaves" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.24
2026-W32	$0.27
2026-W33	$0.23
2026-W34	$0.20
2026-W35	$0.20
2026-W36	$0.17
2026-W37	$0.18
2026-W38	$0.21
2026-W39	$0.22

Questions

How much is The Phantom Knights of Stained Greaves 88544390/1 worth?

The Phantom Knights of Stained Greaves from Phantom Rage Premiere! promotional card (88544390/1) has a market estimate of $0.22, up 4.8% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is The Phantom Knights of Stained Greaves 88544390/1 rare?

It is a Common from Phantom Rage Premiere! promotional card, a 1-card set.

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