The collection
Everything you open, win or craft goes to the Collection. It shows how many of the 720 cards you own, with filters by rarity, mythology, type and name. Tap a card to see it enlarged, with where it appears in fusions and the buttons to craft and disenchant (Showcase, dust and trades).
Building a deck
A deck has exactly 40 cards, and every copy has to be in your collection. You can have up to 30 saved decks, and the name is 1 to 40 characters long. A saved deck is always re-validated: if you disenchant cards from it, it can become incomplete and stop being usable for dueling until you fix it.
Classic and Competitive
Each deck has a mode. Classic lets you use every copy you own; Competitive limits you to 3 copies of each card. Each game mode uses one of them:
| Game mode | Deck rule |
|---|---|
| Campaign, Free duel, Daily Challenge, Legend Mode, Crossing, Trial of the Gods | Classic |
| Ranked, Casual, Friend challenge, Tournament | Competitive |
The Starter deck
Anyone who does not have a deck yet receives the Starter deck: 40 fixed cards, all common and uncommon (27 monsters, 5 spells, 5 traps and 3 equipment, 38 different cards), built with guaranteed fusion pairs. The full list is in Appendix F.
The Codex
The Codex of Myths is the game's public encyclopedia: the 720 cards and the six mythologies, with the real myth behind each one and "where to get" each card (pack, drop, showcase, fusion, pass…). It opens without signing in, in Portuguese, Spanish and English.
