Epic battles are often part of epic fantasy. Think of the Battle of Helm's Deep in 'The Lord of the Rings'. These battles can be between different kingdoms, races, or against a common evil. Mysterious and ancient artifacts are also common. In 'Indiana Jones and the Raiders of the Lost Ark' (which has some epic fantasy elements), the Ark of the Covenant is a powerful and mysterious object. And a sense of wonder and discovery, as the characters explore new lands and uncover secrets, is another key element.
Magic systems play a crucial role. In 'Harry Potter', the magic is well - defined with spells, potions, and magical creatures. A strong overarching plot is also necessary. In 'The Wheel of Time' by Robert Jordan, there is a prophecy about the Dragon Reborn and his battle against the Dark One that drives the entire story forward. And complex characters are important too. Characters like Tyrion Lannister in 'A Song of Ice and Fire' are multi - faceted and their actions and decisions shape the story.
One key element is a vast and detailed world - building. This includes creating unique landscapes, different cultures, and races. For example, in 'The Elder Scrolls' series, there are various provinces with their own languages, traditions, and histories. Another element is a hero's journey. The protagonist often starts from an ordinary or disadvantaged position and goes through trials and challenges to achieve great things, like Frodo in 'The Lord of the Rings' who has to carry the One Ring to Mordor.