As an action, choose a creature that you can touch or see within 18 meters to start experiencing a heart attack.
At the start of each of its turns, the creature must make a Fortitude saving throw.
On a failed save, the creature takes 7d6 necrotic damage and is stunned until the start of its next turn.
On a successful save, the creature takes half as much damage and the heart attack ends.
This spell has no effect on Constructs or Undead.
You can increase the damage by 4d6 for each additional mana or psi expended. If this spell is augmented to target additional creatures, this damage is halved.
You can target one additional creature for each additional mana or psi expended. The creatures must be within 9 meters of each other when you target them.