Is Poison Nova as good as Bone Spirit?
It is in some ways. Bone Spirit has immediate damage, but poison nova has a bit more damage. Nova also hits more than one target, so it does do as much as Bone Spirit. The beauty of this spell is one cast of it, will minimize the amount of CE casts you need. I call this little idea I thought of (probably not first one, but still) CE “preparing”. You run off any hit 2-3 groups with Nova real quick, then Bone Spirit 1 corpse, most usually die. It’s good in many cases.