* Here's the skinny. Right now, a mana leech's potential gain is 40% of the post-resist damage.
* The chance attached to the property is the chance of it going off each swing.
* The new way it works is, the property goes off every time you swing.
* Also, the chance has been scaled based on the speed of the weapon.
* The fastest weapons should be about the same, but slower weapons will
* actually show up with a higher % than previously possible.
*
* The flip side of that is, the % now represents the maximum amount of health/mana that
* you get from the swing. The actual number is generated randomly, from 0 up to your leech %.
*
* Here's a concrete example to clarify.
* Let's say you currently have a katana with 50% mana leech.
* That's an item property intensity of 25 (since % chance is 2xintensity).
* Let's say you do an average of 15 points of damage.
* The base mana yield is going to be 40% of that, or 6 points.
*
* Currently, every other swing (subject to the vagaries of the random number generator) you will get 6 mana, period.
*
* Under the new method, your % chance may change a bit.
* Katana has a base swing speed of 2.5 seconds.
* To get the new % chance, multiply the speed in seconds by the intensity: 25 x 2.5 = 62% (dropping fractions).
* So every swing will generate 0-62% of your base mana yield (that's 6 mana, remember).