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.

Behold, Gate Guardian! · Speed Duel GX: Midterm Paradox 300302043/110

Behold, Gate Guardian! (Speed Duel GX: Midterm Paradox 300302043/110), Common. Market price $0.08, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

Activate this Skill during your Main Phase. Shuffle your entire hand into the Deck, then add 1 Level 11 monster from your Deck to your hand, and if you do, you can Special Summon up to 2 Level 7 monsters with different Attributes from your Deck and/or GY, but their ATK/DEF become 0, also their effects are negated. While you control "Gate Guardian", it gains the following effect. ● Once while face-up on the field, when this card is targeted for an attack: You can change the attacking monster's ATK to 0, until the end of the Damage Step.

Weekly price history

Week	Market price
2026-W31	$0.08
2026-W32	$0.08
2026-W33	$0.08
2026-W34	$0.09
2026-W35	$0.09
2026-W36	$0.09
2026-W37	$0.09
2026-W38	$0.08
2026-W39	$0.08

Questions

How much is Behold, Gate Guardian! 300302043/110 worth?

Behold, Gate Guardian! from Speed Duel GX: Midterm Paradox (300302043/110) has a market estimate of $0.08, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Behold, Gate Guardian! 300302043/110 rare?

It is a Common from Speed Duel GX: Midterm Paradox, a 110-card set.

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