Craft a scene within a medieval castle's great hall, where knights gather around a massive round table, discussing matters of chivalry and honor.

Fresh spring buds blooming on a frosty morning.

The brilliant display of a meteor shower against a night sky.

Close-up of a rainbow-hued bubble surface reflecting light.

Undersea cavern filled with bioluminescent plants and creatures, divers exploring, and hidden treasures scattered around.