New Mob! Lurkers

since no real life animals are allowed to be made into hostile mobs (aka crocodiles) this new fantasy mob would be a great way to replace them. lurkers are a brand new reptilian mob that is a mix between a crocodile and a alligator snapping turtle, where it possesses a croc shaped body with a spiked shell, and a shorter beak like mouth.

lurkers will spawn exclusively in 3 biomes, the savanna, the swamps, and the mangrove swamps which all spawn in 3 different colours respective to their biome. lurkers will spend most of their time in the water where they'll be the most dangerous, as lurkers will be extremely hostile and will attack anything that falls into the water. however, interestingly, when lurkers are on land, they will only attack when a player or mob gets too close to them, around a block or 2 distance. when a lurker is killed, they will have a small chance of dropping a lurker tooth, which can be crafted into a new redstone block, called the spike trap. when a spike trap is activated by redstone, the block shoots out a bunch of spikes on one side that can damage and kill mobs or players when they touch it