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.

Thought Ruler Archfiend · The Duelist Genesis: Special Edition 70780151/2

Thought Ruler Archfiend (The Duelist Genesis: Special Edition 70780151/2), Ultimate Rare. Market price $1.64, up 11.6% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

1 Tuner + 1 or more non-Tuner monsters If this card destroys a monster by battle and sends it to the Graveyard: Gain LP equal to that monster's original ATK in the Graveyard. During either player's turn, when a Spell/Trap Card is activated that targets exactly 1 Psychic-Type monster (and no other cards): You can pay 1000 LP; negate the activation, and if you do, destroy it.

Weekly price history

Week	Market price
2026-W31	$1.26
2026-W32	$1.12
2026-W33	$1.39
2026-W34	$1.33
2026-W35	$1.33
2026-W36	$1.68
2026-W37	$1.57
2026-W38	$1.47
2026-W39	$1.64

Questions

How much is Thought Ruler Archfiend 70780151/2 worth?

Thought Ruler Archfiend from The Duelist Genesis: Special Edition (70780151/2) has a market estimate of $1.64, up 11.6% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Thought Ruler Archfiend 70780151/2 rare?

It is an Ultimate Rare from The Duelist Genesis: Special Edition, a 2-card set.

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