Unveiled during Halloween 2015 in October, the Halloween Cauldron is a bubbling witch's brew pot overflowing with mysterious dark liquid and eerie green glow effects. This 2×2 obstacle perfectly captures the Halloween spirit with its classic potion cauldron design. Clearing it costs and rewards Elixir. Community members debate whether it's bubbling a magical potion or dark elixir — either way, the design is beloved. Players who kept this cauldron enjoy showing it off on streams and clan visits, and it regularly appears in 'rarest base decorations' compilations on YouTube and CoC fan wikis.