Huge surprise news! Discover cards can no longer generate themselves, and cards that add random cards to hand can no longer add themselves, preventing generation loops that could sometimes swing games in big ways.
Hotfix Notes Link: https://www.reddit.com/r/hearthstone/comments/i98rb7/1801_server_hotfix/
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News | Hearthstone | DISCOVER NERFED!! RANDOM GENERATION NERFED!! But Which Cards Will Suffer?