Personally, I would probably call it Incarnation of Death or some similarly chuuni term. That said, the bonus is similar to the focused eloquence (lesser) talent, although you might need to adjust the cost based upon the total number of spells to which it applies. Further, this is not the only class ability that isn't directly translatable to a talent. The monk's multiattack benefit is a good example. I don't really think the necromancer's attack spell bonus needs to be turned into a talent, though. This is their baby, the one thing that defines them as unique among other mages (aside from just spell lists). There's no real need to steal that from them. If you really feel you absolutely can't do without it, just dip a single level with additional profession and take the attack spell bonus as your optional benefit. Then, assuming you're a mage class already, you can drop 25 points to get arcane circle (necromancer). If you're some other spellcasting class you can take arcane circle (necromancer) instead.
