Gaurlems

A Combination of a guardian and a golem
The Gaurlems, useful for anybody with an underwater base, especially with the new drowned mobs attacking you. Created the same way you would with a iron golem but instead of iron you use dark prismarine and a dry sponge instead of a pumpkin. They will have the appearance of an elder guardian with dark prismarine spikes and dark prismarine connecting the tail fin to the body. When first summoned it will just swim around doing nothing. Depending on what you feed it, it will kill certain mobs, here is a list of foods:
(Food: mob)
Ink Sack: Squid
Rotten Flesh: Drowned
Salmon: Salmon
Cod: Cod
Tropical Fish: Tropical Fish
Puffer Fish: Puffer Fish
Prismarine Shard: Guardian/Elder Guardian
The Gaurlem will attack just like a normal elder guardian, and it cannot travel more than 3 chunks from where it was made/set in guard mode unless it is in follow mode.
So what are these guard modes and follow modes? When you right click your Gaurlem in guard mode, it goes into follow mode, and vise versa.
Guard mode: Kills mobs you assigned to it, ignores you.
Follow mode: Follows you and kills mobs you assigned to it.
Has same health as elder guardian in every mode but +5
Does same damage as elder guardian in ever mode but +3
If summoned on land it will flop to water the same way normal guardians do.