Thanks, I've been wanting them to be a summon ever since Ep2 was announced and wyverns were released. Here's my idea on it: Basically it's a super power skeletal or zombie dragonoid that requires 100 in the Death specialization. In order to be able to learn how to raise an undead dragonoid, the master death trainer would send you to the wyrm graveyard place (the one with the ancient dragon that has a bunch of dragons around it) to collect a complete set of bones and other materials that would be dependent on if it was a wyvern or dragon (poison glands for the wyvern, sulfurous ash and ancient essence for a dragon). Then he would have you collect a ton of corpse wax to finish the quest. The spell would summon your very own undead dragonoid to battle, one who has a much much slower health decay compared to the others. It would hit fairly hard, be quite tanky, but would be rather cumbersome when trying to follow its master around (aka, high STR, low DEX). The xp cost would probably be between 7-10 million, and would need quite a few reagents to summon.