Board Thread:General Discussion/@comment-31188206-20170201130302/@comment-26207833-20170204143741

Nope2937 wrote: What we do know is

1. Zahard is immortal and can't be killed inhabitants of the tower, that is his contract, except Irregular because they are free from them. We do know that 10 great families children are usually bound by special contracts since birth. It is nonsense for Zahard not to implement this to control them and instead says "Yeah they're my sons and i free you from all these contracts including my not-killed-by-resident-of-the-tower-contract, come kill me boy!" (If you try to say the contracts exception is his blood related children, thats fanfiction, cause there is no such information now)

2. Worst mistakes can mean many things. Perhaps since they have blood of Zahard, unofficial unlike the princess, and one of them is weak as hell except for his regeneration, they can be used to breed monsters (like the mad dogs) and cause distruptions to his rule. perhaps it is like what Athanos said, they are too weak to safeguard their parts of key.

1) Jahad is an irregular but his immortality comes from the Guardian, and its contract can have flaws, such as the one I told you about (it's the same for Hendo Lok Bloodmadder - I don't think contracts like being invincible against all regulars is something you can give, even to Jahad, without flaws, especially in ToG, where the only overpowered character from SIU's point of view is Phantaminum).

Moreover, it could make sense, since Jahad didn't think he's have blood-related heirs (I do think he even purged all the women he f***** with to avoid having children.

2) Your second argument is a good one, but doesn't make mine false.