The Creeper Den

A Mountain of dirt,cobblestone,gravel with a spawner of a Creeper. Inside the Den will be sand and a new block made out of Gunpowder. The Gunpowder block will burst into peaces if near fire and the burst if near a player will give blindness for 15 seconds . One of the Creepers in the den will be bigger than the rest and will spray Gunpowder in the air making the player blind for a few seconds. But when the Big Creeper gets closer it will explode. The explosion will be enough to even kill a player with fully Blast Protection 4 diamond gear. Please do not reject this idea.