It's meant to represent abilities that will later be stacked on, as if the ability itself is 'incomplete' at the moment and the character only has access to the revealed portion. I wrote her abilities with a mind to 'complete' them as she grows and develops in the world.

Nether Gate only has access to the storage ability
Nether Army can only summon Little Snots
The Tainted Blade is only a simple sword when wielded

Is how I wanted to represent them at the moment. I hope this clears things up! :3