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.

Megarock Dragon · The Lost Millennium: Special Edition 71544954/4

Megarock Dragon (The Lost Millennium: Special Edition 71544954/4), Super Rare. Market price $0.34, down 5.6% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by removing from play a Rock-Type monster(s) in your Graveyard. The original ATK and DEF of this card become the number of Rock-Type monsters you removed from play when you Special Summoned this card x 700.

Weekly price history

Week	Market price
2026-W31	$0.44
2026-W32	$0.44
2026-W33	$0.46
2026-W34	$0.48
2026-W35	$0.48
2026-W36	$0.45
2026-W37	$0.43
2026-W38	$0.36
2026-W39	$0.34

Questions

How much is Megarock Dragon 71544954/4 worth?

Megarock Dragon from The Lost Millennium: Special Edition (71544954/4) has a market estimate of $0.34, down 5.6% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Megarock Dragon 71544954/4 rare?

It is a Super Rare from The Lost Millennium: Special Edition, a 4-card set.

Browse more Yu-Gi-Oh cards · All The Lost Millennium: Special Edition cards · Build a deck · Track your collection