Well, as far as my MP games go, I have yet to see Burden of Time being cast. It’s probably due to the fact that such spell would turn EVERYONE in the game against you, which is next best thing to a suicide.
I was thinking that BoT needs fixing for SP since, apparently, AI still likes to cast it when he can. A simple increase in casting requirements (from death 5 to death 7-9) would be good, or making it higher-level spell (from 5 to 8-9) level would fix this in SP.
Personally I like the first method since it would limit the casting of the spell to powerful Death nations, which is quite thematic.
However, I have no idea how this would impact MP, so I'll leave it to your judgement.
BTW nice changes so far.
