Inferno (boss style mob)

Although the Wither is technically a Nether boss, no one really fights it in the Nether and I think the Nether could do with a Nether restricted boss like mob. There should be a small dungeon generation that can generate cave like structures around lava sea level (y32) in the Nether. A simple dead end cave filled with magma blocks and lava pockets that contains the Inferno mob and 1-2 loot chests. The Inferno should be a fire mob, similar to the blaze, but more humanoid and would initially be 3 blocks tall, possibly like a Wither Skeleton in flames. It would have 100HP and be beaten in 2 stages. At the start of the 2nd stage of the battle it would split into 2 smaller (2 blocks tall) Inferno mobs. 1st stage - Battle initiates when within 16 blocks of the mob. It can attack the player by hitting them when close (dealing 2 hearts of damage), with a fire ball (igniting the player and causing fire damage) and 'Fire Sweep' which would shoot 5 fire balls (together when thrown, 1 block apart when 5 blocks away from attacker) causing 1 additional hp of damage as the standard fire ball attack. 2nd stage - When Inferno divides, it can still do the first 2 attacks but would no longer be able to do 'Fire Sweep'. Their movement speed would increase by half (or double) and would no longer be affected by ranged attacks. Possible drops could include; 50xp total (25xp per mini Inferno) Blaze Powder/Rods Fire Charges Inferno Claw (possible new item Charred Remnant (possible new item)