Knights of the Frozen Throne is an expansion for the digital collectible card game “Hearthstone” by Blizzard Entertainment. Released in 2017, the expansion is themed around the World of Warcraft’s “Wrath of the Lich King” and features the malevolent Lich King, Arthas Menethil. It introduced Hero Cards, transforming the player’s hero into a Death Knight with a unique Hero Power. The Lifesteal keyword, the Icecrown Citadel adventure, and various new card types and keywords were added. The expansion had a notable impact on the game’s meta, offering new strategies and deck possibilities. With a chilling atmosphere and continued support from Blizzard, “Knights of the Frozen Throne” further enriched the Hearthstone experience.