I noticed this particular classic hadn't been included in the HFH, so I rolled up my sleaves and here we go...
Extract Heart
Eldritch 3 (Black), Range: 30', Duration: Special
The caster reaches out his hand and grasps the target creature's beating heart from inside its chest. The target must make a saving throw versus Death to resist the spell, otherwise it suffers 1d10 damage and is helpless due to agonizing pain from the equivalent of a severe heart attack. When the caster's next initiative number comes up, if the caster maintains concentration on the spell, then the affected target must make another saving throw. On a successful save, the spell ends. On a failed save, the target remains helpless and suffers another 1d10 points of damage. The spell's effects last until dispelled, the caster stops concentrating upon it, or the target makes a successful saving throw and ends the spell.
Should the target be reduced to 0 hp or less by the spell, the heart will tear itself from the victim's chest in a gory mess (killing them instantly) and deposit itself in the caster's eagerly outstretched hand.
Spell Build:
Death, 1d10 damage/level (52), max damage 1d (x0.1), target held helpless (40), target 1 creature (x1), only targets living creatures with hearts (x0.9), range 30' (x0.6), duration concentration or until target saves (x1.75), saving throw avoids effect (x0.5), eldritch (x1)
Total Cost: 21.357
Essentially a more p[owerful choking grasp, but one that works on more creatures.b Good balance and great flavor to the spell. Just imagine the various spell signatures:
Magical spike driving into the heart.
Crush the heart by squeezing your hand.
Ghost arm phasing into the chest.
Actually digging your hand into the chest of the victim to pull it out.
Summoning a 'brain eater' next to the victim, who will immediately grab the head with it's tentacles and start to bring out the brain to eat.
Immediately adding it to a scroll in my campaign, just changing damage to 3d6/lvl instead.
Heart of Gold. This is a Death spell, target slain (85), target 1 creature (x1), range touch (x0.4*), duration instantaneus (x1), target's heart transformed into pure gold (x1.25**), saving throw negates (x0.5), arcane (x1). Total 21.25 points. This is a level 3 spell.
* IMHO this should subsume the requirement for touch attack on the target.
** Guesstimation
Heart of Gold
Arcane 3
Range: touch
Duration: instantaneous
By touching the creature (this requires a successful attack throw against a resisting target, otherwise the spell is wasted), the caster transforms the victim's heart into pure gold, instantly slaying the creature. A successful save vs. petrification negates the effects of this spell. The heart, if pulled out of the corpse, is worth 1 GP per XP the target has - the bigger and more feroscouis the creature is, the more its golden heart is worth.