Ice Golem for Ice Caves

A new pumpkin variant that emits a small amount of light (similar to glow berries, maybe glourd?) that spawns in patches around ice caves. They can be a renewable way to make glow signs without having to kill glow squids. They can be sheared to make glow jack o'lanterns (better name needed) that can be placed on top of blue ice and icicles to make an ice golem.

Ice golems are large golems (maybe 4 blocks tall) that move very slowly; they have a large amount of health (150 - 200) and heal slowly over time, but can be healed quickly using splash potions of freezing.

They would attack like an iron golem at close range (although inflicting freezing), but like a snow golem (using the new ice balls) at a longer range. Ice golems spawn naturally around glow pumpkin patches, being neutral unless attacked or the player breaks a glow pumpkin. Ice golems will guard an area within a radius around a glow pumpkin; when spawned by the player, they attack any hostile monster. They would drop ice balls when killed.