I was perusing both "Monstrosities" and the S&W version of "Tome of Horrors". I saw several creatures from those books which would fit well in Hyperborea. So, both of those books can be a great resource.
However, I did find one caveat.
In general, Saves in S&W are easier for the monsters to make. For example, the Frost Giant found in the Monstrosities, S&W Core, and S&W Complete has a save of 5, whereas it has a save of 12 in AS&SoH. The 6 or 7 monsters I directly compared had varying degrees of difference, but were all lower in the S&W version. (Gibbering Mouther was 13 in S&W and 15 in AS&SoH, for example.)
So, something to consider when importing monsters from other systems.
Last edited by francisca (6/04/2014 5:30 am)