Health Globe Healing Bonus
From Diablo Wiki
Health Globe Healing Bonus (or HGHB) is an item affix that boosts the healing a character receives from a health globe or potion by a flat amount. Modifiers boosting this property are found on most item types and range from 1 up to over 12,500 on Inferno quality gear.
This modifier is little valued in Diablo 3 Classic, but it is set to become much more important and valuable in Reaper of Souls, with the general removal of Life Steal from the game. Many class skills in RoS are set to provide a flat amount of healing per use, often adding to 1% of a character's HGHB bonus. As such this modifier looks set to become quite valuable in the expansion.
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