Crystal monster

This monster would appear in crystal/amethyst geode biomes. It would appear from the ground if you take too many crystals from the geode without leaving any to be replenished. Once out of the ground it would stand a little taller than the player, destroying a crystal monster would have a 50% chance to drop 1-2 crystals that can be “replanted” into the geodes. The crystal monster would have high defence (its made out of hard stuff after all) and a high attack with its sharp crystal fists, however being such a heavy monster it’s movements are slow, though the less health it uas the quicker it gets (if we go by the fact that every time you hit it you knock a bit of crystal off so the monster gets lighter), due to its heavy weight it will fall through weaker blocks such as glass and ice. I believe this monster would provide an interesting challenge and be a cool way to replensih your crystals if you accidently mine all of them, perhaps it could glow too?