Imagine a lonely water sprite living in a border less desert... ... Luckily you have the plants to keep you company. However, the plants needs water to grow up, and the only water source is your own body. What's more, you have to defend your garden from the endless monsters in the night, and your only weapon is also the liquid inside you. How long can you survive, when the only resource is the current inside you?
Plant seeds into the soil, and water them, they will bear fruits in the following days. The fruits can either re hydrate the water sprite or give you permanent buffs. Defeats the monsters in the night to find more seeds.