Dota IMBA/Bane

Summary of changes made

 * Enfeeble reduces the target's attributes by 20/30/40/50%.


 * Brain Sap drains mana in addition to health, and causes the target's spells to cost extra mana to cast.


 * Nightmare spreads when a nightmared target is attacked, instead of ending.


 * Fiend's Grip lasts for twice as long as the time it was channeled for (can be chanelled for up to 2.5 seconds). Scepter increases maximum channel time (3.5 seconds), and causes enemies looking at Bane during the channel to become affected by FIend's Grip themselves.