Fireflies can be used as brewing ingredients!

UPDATE! - Since fireflies are currently pointless because they are poisonous they should be a brewing ingredient. This will give these mobs a use and not be pointless!

Item Drops: Dead Firefly (100% drop), Bioluminescent Dust (60% drop) and if caught in a glass bottle it will be a Bottled Firefly.

Item Uses: 1st, The Dead Firefly will be a use for making potions of illness (Effects: Nausea & Poison) and can also be eaten to get poison 2. Bioluminescent Dust can be used for making potions of glowing and can be crafted with an ink sac to make a glow ink sac instead of killing glow squids. Bottled Firefly can be brewed into a potion of exposed sickness which will will give the player poison and highlight them in a bright green.

Extra Uses: If a frog eats a firefly it has 8 in 10 chance to get poison 2 because not all fireflies are poisonous!