Lava Egg

Hatch pool

Hellshard

Secret1 in 1B

Fire King

Legendary1 in 1.33M

Night Dweller

Legendary1 in 100,000

Magma Cube

Legendary1 in 4,000

Lava Imp

Epic1 in 33

Lava Bat

Rare1 in 3

Lava Golem

Common1 in 2