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.

Zefraxi, Treasure of the Yang Zing · Crossed Souls: Advance Edition 21495657/4

Zefraxi, Treasure of the Yang Zing (Crossed Souls: Advance Edition 21495657/4), Ultra Rare. Market price $0.16, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

[ Pendulum Effect ] You cannot Pendulum Summon monsters, except "Yang Zing" and "Zefra" monsters. This effect cannot be negated. [ Monster Effect ] If this card is Pendulum Summoned, or Special Summoned from the Main Deck: You can target 1 "Yang Zing" or "Zefra" monster you control, except "Zefraxi, Treasure of the Yang Zing"; that face-up monster is treated as a Tuner this turn, also place this card on the bottom of the Deck when it leaves the field. You can only use this effect of "Zefraxi, Treasure of the Yang Zing" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.14
2026-W32	$0.16
2026-W33	$0.16
2026-W34	$0.16
2026-W35	$0.16
2026-W36	$0.15
2026-W37	$0.15
2026-W38	$0.16
2026-W39	$0.16

Questions

How much is Zefraxi, Treasure of the Yang Zing 21495657/4 worth?

Zefraxi, Treasure of the Yang Zing from Crossed Souls: Advance Edition (21495657/4) has a market estimate of $0.16, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Zefraxi, Treasure of the Yang Zing 21495657/4 rare?

It is an Ultra Rare from Crossed Souls: Advance Edition, a 4-card set.

Browse more Yu-Gi-Oh cards · All Crossed Souls: Advance Edition cards · Build a deck · Track your collection