Parallel drainage pattern. A parallel drainage system is a pattern of rivers caused by steep slopes with some relief. Because of the steep slopes, the streams are swift and straight, with very few tributaries, and all flow in the same direction.
1 In Creative, the player can use spawn eggs to spawn most mobs. 2  When mobs are spawned this way, all normal spawning requirements, such as light level and block type, are ignored. 3  Any entity can be spawned using the /summon command.
1 Out of all mobs in the game, there are only three water mobs: the squid, the Guardian, and the Elder Guardian. 2  Mobs can be spawned using spawn eggs, except for Iron Golems, Snow Golems and Withers, which are spawned by the player building them in-game from specific blocks.