[quote=whizzball1]
Let me rephrase: If a Codex dies, another becomes the next Codex, right? Now, say Elkepzel's position was naturally a threat to some other person. However, if Elkepzel was killed, another would fill the position and nothing would be accomplished. If Elkepzel killed, but instead he was reborn by some magic, then (I'm supposing) an heir couldn't take his place, so the position would be unfilled for a time. Then the person wouldn't have the threat of that position.
[/quote]

Well there are two problems with that. First, when a Codex dies, another being born that instant becomes the next Codex, and not necessarily with the same ability, so killing them would easily achieve those goals. And second, Codex are completely incompatible with magic. Oh, and they're incredibly hard to kill.