Carnivorous plant (Boss)

Ok..IT IS OBVIOUS that we need more bosses in Minecraft BUT sub-bosses ( also known as mini boss) are almost the same thing..I have an Idea we already have the Carnivores plant idea but what about the health? What I am thinking is HALF of the Hp points of the Wither. Because as we know plants are sort of delicate. AND make this plant invulnerable to every thing except fire because fire beats plant. The only way to do it is to get the fire scepter. In a fire cave I’ll talk about that later but have your idea about the fire cave. Then after that You get LOTS OF XP because without that it would be super useless..and we need some loot! When you kill the plant you get a key.That opens a chest in the cave, in the LOCKED chest in with you open with the plant key. You get the Plant Sword, the Plant Sword is stronger than a golden sword but weaker than a Netherite Sword. And the power when you sneak and look up trees (or drip leaves) pop out and you can walk, to get back down you shift and look down.