Q: Dear Sage,
Can a warforged be animated as or transformed into an undead?
A: A warforged isn’t immune to necromancy effects, so it can be animated as or transformed into an undead, as long as the effect, template or monster description doesn’t otherwise bar it.
For example, only humanoids and monstrous humanoids can become vampire spawn (according to the vampire’s create spawn special attack), so a warforged couldn’t become a vampire spawn.
Another example: The zombie template states that it “can be added to any corporeal creature…that has a skeletal system.” (MM pg. 265) A warforged is certainly a corporeal creature, but it doesn’t seem like a warforged has a skeletal system, so it couldn’t be animated as a zombie.
About the Author
The Sage is a mammal classified in the bear family, Ursidae, native to central and southern China. Debate continues as to whether he is truly a bear or more related to the raccoon rather than the bear, or perhaps in a family of his own. When not eating bamboo and answering rules questions, he works under the nom de plume of Andy Collins as an RPG developer in Wizards of the Coast R&D, where his development credits include Complete Mage, Dragon Magic, and the Player's Handbook v.3.5. He can be easily recognized by his large, distinctive black patches around the eyes, ears and on his rotund body.