This thread is being made due to the recent change where mobs can no longer be effected by health potions... I assume this was another grand idea to "Fix" the economy, what it has resulted in is a drought in certain items... Particularly ghast tears. I spent 4 hours in trade chat asking to buy ghast tears, no one ever responded even when I offered a high price. I spent another 2 hours trying to farm ghast tears, the current most effective way. As a result I obtained a whole 3 ghast tears! If anything just renable it so ghasts can be health potted because right now it is not adding to the economy, it is just taking out if it a useful item.