[s]After a brief discussion, Windel and I figured out that there will be no such mana system, since keeping track of how much mana you have - [i]especially[/i] when it's constantly regenerating and we never listed mana costs for spells - would be way too much effort for very little reward. All that will be restricting your spells is their cast times and cooldowns. That said, don't go casting a million spells at once; we'll be watching.[/s]
Dammit, I got ninja'd when I finally got to sound all official and stuff.

Also, due to the dissolution of the mana system, the following perks have been changed, and their updated versions can be found below, as well as in the main "Specs & Perks" post on the first page:
[hider=Healer][b]Level 4[/b]
[i]Wisdom:[/i] Cooldown time for all spells reduced by 25%[/hider]
[hider=Wizard][b]Level 5[/b]
[i]Attuned:[/i] Cooldown time for all spells reduced by 25%

[b]Level 6[/b]
[i]Enlightenment:[/i] Casting time for all spells reduced by 25%[/hider]