Lord Ghast (new mini boss)

Te Lord Ghast, a new mini boss. The lord ghast has a powerful drop that doesn't get burned in lava. the Fireball Staff, a new weapon that is very powerful. The  Fireball staff shoots three fireballs in a span of 1.5 seconds like a blaze. But it doesn't just set things on fire like a blaze, this is much worse. It Shoots three fireballs like a blaze, that have an explosion radius of an charged creeper. that is what the Lord Ghast shoots too. three fireballs that have the explosion radius of a charged creeper. the lord ghast spawns in a temple in the new soul sand biome. around that temple for 5 chunks, the ghast spawn rate is increased by 10%. the temple is made out of blackstone bricks. the temple ranges in size. (up for developers to decide) There are different rooms in the temple, but at the end of the temple (opposite side from the door) is the spawn room. there are 4 ghasts called guard ghasts. they shoot 2 fireballs over the range of 3 seconds, with no special drop. You have to kill them for the boss to spawn. once the boss spawns you have to run out of the temple because the Lord Ghast summons all ghasts in a 100 block range to its side to help fight, you get the point.the Lord Ghast has a shield that i invincible to all atacs, except its own fireballs. Once you hit three fireballs back, the shield gets destroyed. one  you kill the boss, it drops the Fireball staff, and more ghast tears then usual.(10% more) There's my idea. Thanks for reading!