Blizzard just posted the Patch Notes for 25.0,3, which includes a couple really big nerfs, and a presumed temporary ban to fix a crazy deck.
Patch Notes: https://hearthstone.blizzard.com/en-us/news/23892222/25-0-3-patch-notes
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News | Hearthstone | NERFS AND BANS!?! Blizzard FINALLY murdered Denathrius!