few promises online that I'd break form from the rather predictable choice of running my Slann with Lore of Life and try what is generally considered their second best magical option, Light.
Are goblins (and orcs) at the top of the heap in terms of competitiveness? Probably not, but they are by no means a "bad" army. The new book is definitely an improvement over the 7th edition version. We played at the GW LA Battle Bunker and there were several other O&G armies at the store, which seemed to have fair mix of results in their games.
For this game I also gave Lore of Light a go with my Slann. These spells can turn your Saurus and Temple Guard into some serious bad asses fueled by tiger blood. Having a medium range flaming magic missile with Burning Gaze is also a plus - you can also follow it up with Banishment (which is not flaming) and inflict some serious damage on a unit with regeneration. With Pha's Protection from the Slann and Ice Shard Blizzard from a Skink Priest, your units have some protection before they get into combat. However, this does not offer the insane protection that Life spells have - fanatics don't even put a dent on Flesh to Stone + Throne of Vines Temple Guard.
Had the game not turned into a total blood bath in the early turns due to the close deployment and funky animosity rolling, I think both armies would have gotten better use out of their magic - the lizards would have been more buffed prior to getting into combat and the goblin shamans wouldn't have been so busy squabbling. I'll give Light another go next game - it's not Lore of Life, but I found it pretty entertaining.
Finally, I feel obligated to prove (to no one in particular) that I'm actually making some progress on painting my damn army. Here's more work on my EotG Steggadon, which I started sometime last year. At the rate I paint, the model might be finished before the next Olympics.