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.

Mikanko Rivalry · Amazing Defenders 78199891/60

Mikanko Rivalry (Amazing Defenders 78199891/60), Rare. Market price $0.24, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

If you control a "Mikanko" monster: Target 1 face-up monster on the field; equip it with 1 Equip Spell from your Deck that can equip to it. If an Equip Spell(s) is sent to your GY, while this card is in your GY (except during the Damage Step): You can banish this card, then target 1 Equip Spell in your GY; add it to your hand. You can only use each effect of "Mikanko Rivalry" once per turn.

Weekly price history

Week	Market price
2026-W31	$0.16
2026-W32	$0.18
2026-W33	$0.22
2026-W34	$0.22
2026-W35	$0.22
2026-W36	$0.23
2026-W37	$0.22
2026-W38	$0.24
2026-W39	$0.24

Questions

How much is Mikanko Rivalry 78199891/60 worth?

Mikanko Rivalry from Amazing Defenders (78199891/60) has a market estimate of $0.24, unchanged this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Mikanko Rivalry 78199891/60 rare?

It is a Rare from Amazing Defenders, a 60-card set.

Browse more Yu-Gi-Oh cards · All Amazing Defenders cards · Build a deck · Track your collection