Changes

Currently, as of patch 1.09d11b, the skills that you can leech life and/or mana (with any arrow based attack - however, skills that provide a "burst" of damage effect, including freezing arrow, exploding arrow, and immolation arrow, leech only off of the physical damage of the arrow, and not the elemental damage. Also, the skills Cold Arrow, Fire Arrow, and Magic Arrow all convert a portion of your physical damage into elemental or magical damage, and as a result, will be capable of leeching less, as the appropriate items) are:physical damage is lower.

In other words, you can leech with every skill except Exploding Arrow. Unique Bows and Crossbows can spawn with the mod "Shoots Exploding Arrows", which means that on "normal attack" the bow will shoot exploding arrows like the skill. This working of this property is comparable to the "Shoot Magical Arrows" property. Arrows are however always required for exploding arrow, but they will always hit. Like the skill, one cannot leech with bows that have the "Shoot Exploding Arrow" feature. The level of the exploding arrow is 1, but it seems to be amplified by additional fire damage sources on the bowget added to the burst of fire from the skill. If the player uses any other attack including the exploding arrow skill itself, will the feature be overwritten. One can still leech with these bows if one uses any of the other attack skills. Fire Arrow is currently bugged and converts a large percentage of your physical damage into fire damage instead of adding a bit of fire damage to your attack. It is a handy way of killing physical immunes, but this will be changed in 1.10. Many people claim that it converts all of your physical damage into fire damage, but it can damage fire immune creatures and one can still leech with this skill. Be aware that because a large portion of your physical damage is converted into fire damage, your leeching will in turn be very low. Estimated conversion percentage is about 50% physical into fire.