Wand of water: Can shoot water. Ya. BUT the water can just be laid out as something to power up the electric shock that comes from it, hence the electric eel tip (I did use hence right right?). They are also said to have healing powers, but these are rarely seen because in order to use them, the pony has to trade their good health for whatever illness/cut/mental injury the other pony has.

Wand or fire: Shoots fire and can create a large forcefield that needs to be strengthened every 10 minutes. It can also affect the magic of unicorns in various ways, from making their magic only fire stuff to having complete control over the temperature of the fire around them. It can also create light.

Wand of earth: Can create things from nature, shoots venom but not fatal venom. Can create mountains and large things like that but it is only recommended for experienced masters because if they fail, the wand can malfunction and the student/master will get severely injured.