I've played 40k for a few years, and I want to branch out into Fantasy. I looked at the armies and read through the rulebook, and the army that appeals to me the most is Skaven. I like their fluff, models, and the random nature of their rules.
Although I've never played a game of Fantasy, I was able to secure four (yes, four!) Skaven halves of the Island of Blood set that I want to turn into the core of a decent army. For those of you who don't know, these models amount to:
4 Warlords
4 Warlock Engineers
160 Clanrats (80 with two hand weapons, 80 with spears)
4 Master Moulders
8 Rat Ogres
4 Warpfire Thrower
4 Poisoned Wind Mortars
To this I definitely want to ad a Screaming Bell, a Hell Pit Abomination, a Doomwheel, and a Warp Lightning Cannon. Aside from the aforementioned models, I'm not sure where to take this. I was considering converting 40-50 of the spear Clanrats into Stormvermin and 1-2 of the Warlords into Assassins. I like the idea of Poisoned Wind Globardiers, so perhaps converting some of them from Clanrats?
Any suggestions?