What are all the common cards available in Clash Royale?

As of the last knowledge update, Clash Royale features a dynamic and ever-expanding roster of cards that players can collect and utilize in battle. Among these, common cards, known for their gray-colored backgrounds, are the foundational units and spells that often form the core of many strategies. The list includes but is not limited to Archers, Arrows, Bats, Bomber, Cannon, Elite Barbarians, Fire Spirits, Giant Snowball, Goblins, Ice Spirit, Knight, Minions, Mortar, Royal Delivery, Royal Giant, Skeleton Barrel, Skeletons, Spear Goblins, Tesla, Zap and the Royal Recruits. However, one should note that this list might change over time as new cards are introduced or existing ones are reclassified during updates to maintain the game's balance and freshness. Therefore it's recommended to consult the most recent in-game library or official Clash Royale resources for an up-to-date catalog of common cards.