Souls

Souls are crafting materials, dropped by certain enemies in hardmode. They are not affected by gravity and thus stay floating where they are dropped.

Please Note: Any monster drops the Soul of Night or Soul of Light, it just depends on the biome they are in. Because of this, a good way to farm souls of light or night is to set up a rectangle of at least 50 meteorite so that the meteor heads spawn in the very deep underground corruption or hallow. holding a water candle will help to increase the spawn rate also.

Trivia

 * All of the Soul of... names rhyme with each other (-ight).