It has taken the place of Chrysalis on the 3rd row of Resolve runes. It also looks like it’s supposed to receive an effect change that adds some favor to health builders like tanks and fighters over other classes...ether that or it’s a typo as it only says +0 at the moment.
> After taking damage from an enemy champion, for 3 seconds, the next 3 spells or attacks you receive from the same enemy champion deal 15 − 40 (based on level) less damage.
> After taking damage from an enemy champion, the next 3 spells or attacks you receive from them deal 25-50 (+0 of your bonus health) less damage.
> Duration: 1.5 seconds
> Cooldown: 45 seconds