Wounding Spell( Lost Empires of Faerûn, p. 9)
Because you have studied the cruel arts of the Athalantan magelords of old, you know how to cast spells that cause terrible, bleeding wounds.
When affected by this feat, a spell that deals damage to a creature also inflicts a bleeding wound that does not heal normally. On each subsequent round, the victim loses 1 hit point at the beginning of your turn. The continuing hit point loss can be stopped with a Heal check (DC equal to the spell's save DC, or the save DC it would otherwise have in the case of a spell with no save), a cure spell, or a heal spell.
A wounding spell occupies a spell slot two levels higher than the spell's actual level.