Blaze

Blazes are mobs that will be added in Update 0.12.0. They spawn in the Nether in Nether Fortresses.

Attack
Blazes attack by firing balls of fire at the player, which sets them on fire and makes them take damage. If the player gets close, they can also attack by charging at the player. They can fly, making them hard to fight in open spaces.

Combat
Blazes can be defeated easily using an iron or diamond sword, but the fact that they spawn in groups of 2-3 make them very dangerous. Iron Armor or above is recommended, and potions like Fire Resistance will make the fight easier.

Trivia

 * Blazes drop Blaze Rods, which are important in making Brewing Stands.