keep strength of the ages, and remove grasp instead
even if the sustain aspect wasnt nerfed to hell, because of bruiser ekko and maokai, grasp doesnt even feel like it belongs into the tree. the health return was the only thing that made it an actual resolve mastery, since it helped you to sustain through a fight.
imo just remove it for a version of strength of the ages, that scales as well for laners as for junglers.
strength of the ages(keystone)
variant 1
you permanently gain 30 + 15/lvl health (300 max) gain 1% damage reduction for each enemy champion who has dealt damage to you within the last 4 seconds (maximum 5%).
slower but more reliable ramp up of the bonus health, but increased survivability in extended fights.
variant 2
you permanently gain 10% additional bonus health every 4 seconds in combat, heal 5% of your missing health (halved for ranged champions)
giving it the sustain aspect that grasp used to offer.
variant 3
you permanently gain health (300 max) for you or allies killing certain nearby units:
- Siege minions: + 6 Health
- Small minions: +1 health
- Large monsters: +8 health at the max bonus, champion kills and resists restore 12% of your missing health. (halved for ranged champions)
more like the current version of the mastery, but without the mostly usless sustain off cannon minions (which is mostly irrelevant by the time the health is actually stacked), and replaced with in combat sustain.
some of the health stacks moved over to regular minions, so youre not entirely reliant on getting every single cannon minion in lane to have a keystone.
make the resolve keystones:
courage of the colossus: specialized keystone granting a huge frontloaded burst of resistances for vanguards and divers who bring enough cc and engage to trigger the shield on hard engages.
bond of stone: specialized keystone for wardens who want additional protection for their team
strength of the ages: keystone for juggernauts and other champions who want to dive into the enemy team and survive extended fights.