Rookern and the removal of Mana Mythic Liandry immediately makes me think that Rookern will box out a big chunk of AP champs.
20% max HP shield making it to live is an absurd number, and there will be a significant portion of the roster who can’t punch through until buying Liandry and/or additional %pen second and third.
I’m really confused what is supposed to happen to Liandry users in the new season. Caster’s Companion looks terrible and not every Liandry champion will love or even be able to use Malignance, and those champs who wanted the haste are not going to pivot to ROA with no haste.