Magma Monsters adds in a little extra danger to Minecraft with 2 Monster mobs.
Magma monsters come in 2 sizes – ‘Magma Monster Grunts’ and ‘Magma Monsters’
The Magma Monster spawns around lava (as of 1.16.3 – in lava), has fireball ranged attacks, and can set blocks on fire as it walks.
Magma monsters will change to Obsidian or Stone (Grunts) if they come in contact with water and can become molten again if in contact with lava.
The Hardened versions will move slower, not be able to shoot fireballs, but have more armour, and can inflict the slowness effect on a player.
Mob Drops also reflect the Hardened and Molten forms with different items for each type.