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.

Rillaboom · Chilling Reign 18/198

Rillaboom (Chilling Reign 18/198), Holo Rare, Stage2, 180 HP. Market price €0.25, up 8.7% this week. Illustrated by Hitoshi Ariga. Prices are estimates from TCGPlayer and Cardmarket, not guaranteed values.

The one with the best drumming techniques becomes the boss of the troop. It has a gentle disposition and values harmony among its group.

Card text

Wood Drain 60 — Heal 30 damage from this Pokémon.
Raging Repeated Strike 120+ — Discard any amount of Energy from your Pokémon. This attack does 30 more damage for each card you discarded in this way.

Weekly price history

Week	Market price
2026-W31	€0.26
2026-W32	€0.27
2026-W33	€0.27
2026-W34	€0.22
2026-W35	€0.22
2026-W36	€0.22
2026-W37	€0.21
2026-W38	€0.23
2026-W39	€0.25

Printings & variants

Holo — $0.28
Reverse Holo — $0.28

Questions

How much is Rillaboom 18/198 worth?

Rillaboom from Chilling Reign (18/198) has a market estimate of €0.25, up 8.7% this week. Prices are estimates from TCGPlayer and Cardmarket.

Is Rillaboom 18/198 rare?

It is a Holo Rare from Chilling Reign, a 198-card set.

Is Rillaboom 18/198 tournament legal?

Rillaboom 18/198 is legal in Expanded.

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