Dota IMBA/Axe

Summary of changes made

 * Berserker's Call grants Axe +200 armor, and makes enemies affected by it attack faster.


 * Battle Hunger has no base duration, lasting until purged, or removed by killing a unit. Prevents target from regenerating health naturally. Ends if the target comes near its own fountain.


 * Counter Helix deals less damage, but has dramatically increased proc chance.


 * Culling Blade's damage threshold increases based on Axe's own maximum health.