## What changed
- **Class Sets** — New card collection mechanic introduced, allowing players to build decks with cards exclusive to individual classes
- **Two-Class Arena** — Arena mode now features picks from two classes instead of one, expanding deck-building possibilities
- **Event Rewards** — New reward structure added for limited-time events with updated progression tracks
## New Content
- **Class Set Cards** — Exclusive cards added to each of the nine classes with mechanics tailored to class identity
- **Two-Class Arena Format** — Players select their two classes at the start of an Arena run and draft from both class pools
- **Event Progression System** — Events now offer tiered rewards based on player engagement and completion
## Overall
Class Sets introduce class-exclusive cards while Two-Class Arena and revamped event rewards expand gameplay variety and progression paths.
Introduction of class sets, return of two-class Arena, and new event rewards
# Hearthstone Patch Summary
## What changed
- **Battlegrounds** — Mechanics and balance adjustments to the auto-battler mode
- **Duels** — Changes to deck building rules, hero powers, or treasure offerings
- **General systems** — Unspecified modifications across additional game modes
## Overall
The patch includes updates to Battlegrounds and Duels alongside other system changes, but specific card names, stat adjustments, and detailed mechanical modifications are not provided in this summary.
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**Note:** I need the actual patch details (specific minions nerfed, treasures changed, hero power adjustments, etc.) to provide a complete summary. The source material only mentions categories without specifics.