User blog comment:Merkarion/Original Gremory Clan Ability/@comment-33341107-20181219091528/@comment-37165251-20181219094409

Maybe it has something to to with plants ....letting thorned rose-ranks grow and attack the enemy ^^...

Like said before if Rias did not have the Clan Trait (I think it was said somewhere in the LN) she could not be Clan Heir...yes you can say Sairaorg...but he is an exception as was said...being Heir and becoming Lord is a Big difference. I think that Zekram is voting for Sairaorg becoming Maou if strong enough and make Magdaren Heir and Futute Lord Bael...win win for Zekrams Bloodline^^