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.

Demise, Agent of Armageddon · Cybernetic Horizon Special Edition 86124104/4

Demise, Agent of Armageddon (Cybernetic Horizon Special Edition 86124104/4), Common. Market price $0.20, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

You can Ritual Summon this card with "Cycle of the World". This card's name becomes "Demise, King of Armageddon" while in the hand or on the field. If this card is Ritual Summoned: Destroy 1 face-up monster on the field. If this card is sent to the GY: You can target 1 Ritual Monster you control; while it is face-up on your field, your opponent cannot activate cards or effects in response to the activation of your Ritual Monsters' effects.

Weekly price history

Week	Market price
2026-W31	$0.18
2026-W32	$0.18
2026-W33	$0.18
2026-W34	$0.19
2026-W35	$0.19
2026-W36	$0.19
2026-W37	$0.19
2026-W38	$0.20
2026-W39	$0.20

Questions

How much is Demise, Agent of Armageddon 86124104/4 worth?

Demise, Agent of Armageddon from Cybernetic Horizon Special Edition (86124104/4) has a market estimate of $0.20, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Demise, Agent of Armageddon 86124104/4 rare?

It is a Common from Cybernetic Horizon Special Edition, a 4-card set.

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