Fireball Clash Royale WikiThe Fireball is a spell card available from the Training Camp. It attacks at radius of 2.5 and makes 325 area damage and 130 Crown Tower damage at Level 1, and is upgraded up to 832 area damage and 333 Crown Tower damage. The cost for the Fireball is 4 Elixir. It can lower the health of the Giant, the Barbarians and can help finish off the Tower. Clash Royale describes the Fireball as: “Annnnnd…Fireball. Incinerates a small area, dealing high damage. Reduced damage to Crown Towers.”