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.

Aleister the Invoker of Madness · Shadows in Valhalla 97973962/60

Aleister the Invoker of Madness (Shadows in Valhalla 97973962/60), Secret Rare. Market price $5.69, up 1.1% this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

2 monsters with different Types and different Attributes This card's name becomes "Aleister the Invoker" while on the field or in the GY. If a monster is Fusion Summoned while you control this monster (except during the Damage Step): You can discard 1 card, and if you do, add 1 "Invocation" or "The Book of the Law" from your Deck to your hand. If this face-up card you control leaves the field because of an opponent's card effect: You can add 1 "Omega Summon" from your Deck to your hand.

Weekly price history

Week	Market price
2026-W31	$8.86
2026-W32	$7.39
2026-W33	$7.46
2026-W34	$7.65
2026-W35	$7.65
2026-W36	$6.59
2026-W37	$7.11
2026-W38	$5.63
2026-W39	$5.69

Questions

How much is Aleister the Invoker of Madness 97973962/60 worth?

Aleister the Invoker of Madness from Shadows in Valhalla (97973962/60) has a market estimate of $5.69, up 1.1% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Aleister the Invoker of Madness 97973962/60 rare?

It is a Secret Rare from Shadows in Valhalla, a 60-card set.

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