Ainz Time Stop and Death 7

“[Grasp Heart]!”
This spell was one that crushed a foe’s heart, and among the ten tiers of spells, it was an instant death spell of the ninth tier. Many of the necromantic spells which Momonga was adept with possessed instant death properties, and this was one of them.
Momonga had chosen to open with this spell because even if it was resisted, the spell would still temporarily stun his opponent.

[...]

Momonga’s opening spell was one that he particularly favored, [Grasp Heart].
This sort of magic was Momonga’s specialty.

- Overlord; Vol 1; Chapter 3