How to water crops?

[Platinum Nail]

How do you water crops as a Pegasus?

[Snowmane]

You need the Vortex Pendant and Water Mastery.

(1) Drag Water Mastery to the hotbar while wearing the pendant to get the Water Rush ability.

(2) Go to the farming patch with the earth pony or ponies whose crops you're watering, face the patch and click on Water Rush.

If done correctly, no materia will be subtracted from your inventory and the earth ponies will see the soil darken from watering and get a message saying the patch was watered.