BloodMagic/BM_src/thaumcraft/api/IVisDiscounter.java

package thaumcraft.api;

/**
 * @author Azanor
 *         ItemArmor with this interface will grant a discount to the vis cost of actions the wearer performs with casting wands.
 *         The amount returned is the percentage by which the cost is discounted. There is a built-int max discount of 50%, but
 *         individual items really shouldn't have a discount more than 5%
 */
public interface IVisDiscounter
{
    int getVisDiscount();
}