3 best 8-card decks for December's Grand Challenge in Clash Royale

Every month, Clash Royale hosts the Grand Challenge, which gives players a chance to win prizes like cards, battle flag tokens, chests, gold, and magic items.

I need help with this! Its saying i dont have 8 cards in my deck even though i do have it. Any help? : r/ClashRoyale

Leaderboard Decks Top 10 - Clash Royale Season 2023-01 : r/ClashRoyale

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Clash Royale League (CRL) 2023 Best Players by Win Condition

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Evolved Knight *BROKE* Clash Royale - Best Card Ever?

So I had 12 wins in FM challenge and right after that I added it to my deck and I just had 12 wins in Grand Challenge using Goblin Hut+FM+Mortar combo!

Counter Decks + Grand Challenge Portal

SirTagCR: BEST DECK FOR 12 WIN GRAND CHALLENGES! New Meta 3 Musketeer Deck — Clash Royale - RoyaleAPI

Naughty or Nice - Clash Royale Season 54 (December 2023)