What are the worst cards to use in Clash Royale?

The categorization of the "worst" cards in Clash Royale can largely depend on the current meta, player skill level, deck composition, and specific strategies being employed. However, some cards historically have found themselves frequently cited due to perceived underperformance or lack of versatility. Cards like the Bomb Tower suffered before their reworks due to their limited range and inability to target air units. Cards like Royal Delivery faced criticism for its delayed activation time, making timing more difficult. Similarly, the Mirror has seen lower usage rates as it can often lead to an elixir disadvantage with no direct board impact upon use. It is important to note that Supercell regularly updates the game, which can shift a card's viability through balance changes, hence labeling any card as the "worst" is both subjective and temporal within Clash Royale's evolving landscape.