What the heck is "greased lightning"?

[Hasrat]

Personally, I have more of a beef with BLM/THM's skillset. The tooltips don't really describe exactly WHAT Astral Fire and Umbral Ice DO, or why you'd want one or the other - just that certain skills grant them. I've run into a couple of low-level THMs that had no idea that Astral Fire increases fire spell damage, and spent most of their time in Umbral Ice because they could cast spells, essentially, for free. Sure, the Astral Fire and Umbral Ice icons say what they do, but accessing those icons is awkward if you play with a controller instead of KB and mouse.

What's worse is how nothing really describes how three stacks of either reduces cast times for the opposing level 3 spell. Real easy to pass on those spells as long as you think casting 3 level 1s would probably be about the same.