grasp of the undying is probably the healthiest rune there is.
you're rewarded with a little burst of damage from being in combat which will come through sustained fight or lane trading. And the damage is not insane. Electrocute is just insane on
and a lot more. Predator should just be called hecarim Rush(pun intended). Conqueror and it's true damage problem. Comet is not always guaranteed to hit. Aery is a nightmare on damage over time champs.
can still have relevance in teamfights with Grasp, especially when paired with Sheen proc for extra more damage.
also has relevance in teamfights with Grasp, including pairing it with the AA-reset burst from his E.
can have the capability to render the enemy laner useless for a second to be able to proc off the Grasp debuff, also when paired with his Passive.