Everyone knows a version of “The Five Second Rule” that we learned as children. If you drop a candy bar on the floor, as long as you pick it up in less than five seconds, it’s okay to eat. Needless to say, it probably wasn’t your mother who taught you this. There is a different version of this that is used in World of Warcraft that deals with the mana regeneration of your druids to be aware of …
In WoW, the five second rule is generally shortened to “FSR” and has to do with how mana regen is affected by spell casting. One of the ways that Druids regenerate mana is a direct result of their Spirit stat and, to a lesser extent, their Intelligence stat. Once a spell is cast, the regeneration effect you gain from your stats does not start again for five seconds. So you are walking one afternoon minding your own business. A bunny jumps out and you hit him with a Moonfire. Once that spell is cast, you must wait a full five seconds for the regeneration effect to start again. This happens every time you cast a spell with a few exceptions.
1) Those spells and effects that don’t cost any mana to cast don’t trigger the FSR like Clearcasting and Natures Swiftness.
2) The channeling spells we use, like Hurricane and Tranquility, are affected by FSR differently than normally cast spells. The FSR begins in these cases as soon as the cast for one begins. Second, the FSR will not exceed five seconds. For example, with Hurricane, the channel time is 10 seconds. The FSR starts when you start the channel, and since that channel lasts longer than 5 seconds, you don’t have to wait for an addition 5 seconds after the spell completes.
So what is the problem and why should you be concerned? Well, what if you find yourself casting a spell every five seconds for a long fight? That’s how it is! Your little blue bar is empty. A Moonkin or a Manaless Scrap is just as useful in a fight as a pile of dirt.
Fortunately, there are a few ways to fix this problem. First of all, mp5 gear is unaffected by FSR so regeneration from those sources continues. Also talents like Intensity and Dreamstate are of great help, as well as our Innervate spell. While this may not seem like a big deal at the lower or even middle levels, once your druid starts reaching the level cap and you get into the endgame content it becomes quite a factor.