Gold is the most crucial currency in the kingdom. It can be used to purchase multiple items and bonuses, as well as to revive troops in the Temple.
You can collect gold on dragon mounds or gold mountains (in case your Kingdom wins the Kingdom clash), accomplish and claim specific achievements, or get gold as a bonus from a player with access to the Royal Treasury. Triumphal challenge and other seasonal battle passes may also yield gold as rewards for upgrading the battle pass level. 
You can win gold by participating in our community events or by claiming daily free sales. You can buy gold in packages.