Strength of spirit is useless. .3% POINT3. not 3%. three tenths of a percent. so when you punch that into a calculator you do .003*your mana.
On 1000 mana, you get 3 hp/5.
Have fun with that on your three point investment.
Honestly the only masteries worth much are the summoner spell buffs, Archaic Knowledge, and about half of the utility tree.
The most common build is 9/0/21 for a good reason. It doesn't matter what role you're playing.
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