| David Hayden |
It's not actually a bad system, just a little more complicated that 2nd Ed D&D when it comes to combat. It had some interesting points with SDC damage to armor and fighters always having a chance to parry. The spell system was broken though, 3rd level spellcasters could cast epic spells. Definitely a good source of flavor though - circles and runes tend to freak out players.
Other sourcebooks that might be worth looking at:
Island at the Edge of the World - least I think that's the right one. Has some interesting fluff about fairies and such.
Monsters and Animals had a number of interesting creatures that you could easily modify and spring on a party for a "WTF is that?!?" moment if you have players who tend to memorize critters info. I wouldn't bother unless you get a particularly good deal though.
Other sourcebooks might be useful depending on your specific campaign interests - the Yin-Sloth Jungles book might not be too helpful if you're running a mostly arctic campaign, for example.
And the Wolfen are among the coolest creatures out there. Bearmen kick ass too.