Just found this — someone built a full [Slay the Spire 2 guide site] with card database, class guides, and a co-op synergy builder. Actually useful for EA.
After 80+ hours in Early Access I've been compiling useful resources. The best all-in-one site I've found is [slaythespire2.space](https://slaythespire2.space) — here's what it has:
- **Card & Relic Database** — [567 cards](https://slaythespire2.space/cards) and [286 relics](https://slaythespire2.space/relics) with filters by class, cost, type, and keywords. Faster than the in-game collection screen.
- **Class Build Guides** — Full guides for all 5 classes. The [Regent guide](https://slaythespire2.space/classes/regent) and [Necrobinder guide](https://slaythespire2.space/classes/necrobinder) are especially good since there's almost nothing else written about the new classes yet.
- **Mechanics Explained** — Clear breakdowns of [Doom](https://slaythespire2.space/mechanics/doom), [Sly](https://slaythespire2.space/mechanics/sly), [Enchantments](https://slaythespire2.space/mechanics/enchantments), and [Act Boons](https://slaythespire2.space/mechanics/act-boons). Useful if you're coming from STS1 and confused by the new systems.
- **Co-op Tools** — The [co-op synergy builder](https://slaythespire2.space/synergy-builder) lets you pick your team's classes and see which co-op cards synergize. The [co-op guide](https://slaythespire2.space/co-op-guide) covers class combos and how difficulty scales with player count.
- **Class Tier List** — [Community tier rankings](https://slaythespire2.space/tier-list) for all 5 classes.
No ads in the way, no account required. Just a clean reference site. Hope it helps.