What is established
- The official store says unopened cereal boxes can contain a super-rare foil card.
- Steam lists A True Fan for a full set of foil cards.
- Steam lists The Collector for collecting all foil cards.
What the public sources do not state
No official page reviewed on 21 August 2026 provides foil odds, a per-box guarantee, a complete foil name list, or a rule saying that every standard card has a foil version. The database therefore does not manufacture percentages or label every card as foil-eligible.
Tracker behaviorThe optional “foil found” box in the tracker records your own in-game observation. It is a personal note, not a database claim that every documented card has a foil variant.
A practical foil workflow
- Open cereal boxes during ordinary collection runs.
- When a foil appears, mark only the matching entry you personally observed.
- Keep your exported tracker backup after longer sessions.
- Use Steam's achievement unlock as the completion signal.
Foil and value are separate
Foil status is a special variant. Quality and physical condition also affect card value according to the official store description. Avoid treating rarity, foil, and condition as the same field.
