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.

BM-4 Blast Spider · Legendary Duelists: Ancient Millennium 40634253/53

BM-4 Blast Spider (Legendary Duelists: Ancient Millennium 40634253/53), Rare. Market price $1.55, up 0.6% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Once per turn: You can target 1 DARK Machine monster you control and 1 face-up card your opponent controls; destroy them. If a monster you control that was originally a DARK Machine destroys an opponent's monster(s) by battle or card effect and sends it to the GY: You can inflict damage to your opponent equal to half the original ATK of 1 of those monster(s) destroyed and sent to the GY. You can only use this effect of "BM-4 Blast Spider" once per turn.

Weekly price history

Week	Market price
2026-W31	$1.39
2026-W32	$1.41
2026-W33	$1.47
2026-W34	$1.49
2026-W35	$1.49
2026-W36	$1.49
2026-W37	$1.57
2026-W38	$1.54
2026-W39	$1.55

Questions

How much is BM-4 Blast Spider 40634253/53 worth?

BM-4 Blast Spider from Legendary Duelists: Ancient Millennium (40634253/53) has a market estimate of $1.55, up 0.6% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is BM-4 Blast Spider 40634253/53 rare?

It is a Rare from Legendary Duelists: Ancient Millennium, a 53-card set.

Browse more Yu-Gi-Oh cards · All Legendary Duelists: Ancient Millennium cards · Build a deck · Track your collection