Thrift

In game description- "Decreases skill cost, reducing the gold you need level up."

This reduces gold cost for barriers/turrets so, it can

be used for offence, defense or both.

Since this reduces gold cost, it is good for times

you are low on gold during battle.

It's effect will increase the more you LV up it.

If a Weapon/Ring has Thrift +Value it's LV

increases by said value.

You may equip up to 4 auto-skills at a time so,

make use of your strategy with the 4 you need.

Since it is an auto-ability it activates automatically.

This is a non-unique ability so, all characters may use it.