Water

Of the Water Element, there are 3 Items, 1 Block, and 1 Mob

Concentrated Water
Concentrated Water is a block that can be crafted, and will summon a Water Golem

Water Golem
Water Golems are fast, aggressive creatures, spawned by the concentrated water block. They drop essence of water when killed.

Essence of Water
Essence of Water is essential for all Water Items, and Water sub-elements.

Water Tome
A water tome, is a book used to craft the Rapier of Water.

Rapier of Water
This Rapier changes the weather upon right clicking, and also gives water breathing when held. If it is raining, upon attacking, lightning will strike your foes.