Fantasy-Themed Riddles for Quest Lovers

I breathe fire without lungs and guard treasure while I sleep. What am I?

I carry spells inside leather covers. Open me and worlds appear. What am I?

I am the poison that saves, brewed by moonlight. What am I?

I wear a shining crown that never sees a head. What am I?

I gallop with no hooves and sail without a sea. What am I?

I vanish when forgotten, and grow when believed in. What am I?

I have many doors but only open for the chosen one. What am I?

I crack riddles at bridges and feast on those who fail. What am I?

I guide heroes with glowing runes, yet fit in a pocket. What am I?

I sleep by day, glow by night, and whisper ancient lore. What am I?

I sit on a king's head, gold and studded with jewels. What am I?

I hide in forests, giggle in shadows, and grant wishes sparingly. What am I?

I am a doorway without walls, a rip in time and space. What am I?

I'm the voice of the forest, the keeper of balance. What am I?

I'm the final page no hero wants to reach. What am I?

I'm clad in shining armor, defending the castle. Who am I?

I'm stuck in a boulder until the chosen one pulls me free. What am I?

I'm deep beneath the tower, with chains and locked cells. What am I?

I'm an old scroll foretelling the hero's journey. What am I?

I'm locked until the riddle is solved, and I'm full of gold. What am I?

What gets bigger the more you take away?

I speak without a mouth and hear without ears. What am I?

What belongs to you but others use more than you do?

What can fill a room but takes up no space?

What is always coming but never arrives?

What has cities but no houses, forests but no trees, and water but no fish?

Forward I am heavy, backward I am not. What am I?

What invention lets you look through a wall?

What has keys but can't open locks?

What question can you never answer yes to?