Deck Building
Build and manage decks with mainboard, sideboard, and maybeboard—and keep them legal for your format. Rhystic ties deck building to your collection so you can see what you own and what you’re missing.
What sets us apart
- Format compliance — We check mainboard and sideboard against the chosen format (e.g. Commander, Standard) and surface legality issues so you can fix them before you play.
- Collection-aware — Decks can show which cards you already own and which come from your collection or a teammate’s (borrowed). No need to cross-check elsewhere.
- Team borrowing — Allocate cards from a teammate’s collection to your deck for events; the app tracks who owns what and supports return flows.
- Clear structure — Mainboard, sideboard, and maybeboard are first-class so your list matches how you actually build and goldfish.
How to use it
Go to Decks to create a new deck, pick a format, and add cards. Use the search to add printings to mainboard, sideboard, or maybeboard. The deck view will show counts, format legality, and—when you’re logged in—how many of each card you have in your collection or can borrow from your team. Adjust quantities and move cards between sections as you tune the list.