please just get rid of the stack mechanic on grasp.
make the new grasp 4% max health damage, 4% missing health heal, 4% max health increase with the values halved for ranged champions and be done with it.
the stack mechanic makes the value of the keystone incredibly unpredictable.
or it needs to be tied to a different mechanic than auto attacking champions with grasp procs.
and stacked 170 health in 20 minutes, because the dude wasnt afraid to fight me and kept my grasp proc up with sunfire ticks.