Curses are nastier than hexes or jinxes. Whereas both jinxes and hexes do harm to the target, they can sometimes be used for pranks, and are more often used when you want to do harm to a target, but not too much. Curses on the other hand, do severe harm. They range for spells that do extreme pain to one that kills someone instantly. A curse can also mean an enchantment with negative effects.
Some curses, like the conjunctivitus and confringo curse are used by good characters in HP. Because well, they are not all that bad. The basic and NEWT spells here are not extremely nasty spells.
This list also includes dark magic such as necromancy.
Note that, a good person will try not to use curses. Also, a dark wizard will use these spells better. Some of these spells are only useable by people who have the dark magic ability.
BASiC CURSESIn a way, basic curses are generally considered hexes. So there are only two here.
Conjunctivitus CurseIncantation: Conjunctivitus
Description:A curse that causes great pain to the victim's eyes.
Boundaries: Restrictions: None
Snake SummoningIncantation: Serpensortia
Description: This actually falls under transfiguration
Boundaries: -
Restrictions: None.
NEWT Level CursesThese can only be used by NEWT students
Blasting CurseIncantation: Confringo
Description: Causes anything that the spell meets to explode in flames
Boundaries: Restrictions: NEWT students(Tier 6) and above
Confringo (Blasting Curse)
FiendfyreIncantation: Fiendfyre
Description: Dangerous, uncontrollable and extremely powerful fire which can take the form of beasts such as serpents, Chimaeras and Dragons.
Boundaries: Well you can't control it, so it wouldn't be too sensible to use. The fire spreads quickly, so its hard to escape it. I guess you could vanish it, but you can't estuingish the fire.
Restrictions: NEWT students(Tier 6) and above. Its very difficult for NEWT students to use, and if they use it they'll probably end up dying themselves. So don't use it if you want your character to die. Why am I putting it here then? Cause Crabbe used it successfully (and died). So a stupid NEWT student who can't do basic transfiguration can create unstoppable fires which destroy a whole room in a castle. HP can be weird sometimes. Requires dark magic.
Cruciatus CurseIncantation: Crucio
Description: Inflicts unbearable pain on the recipient of the curse. The effects of the curse depend upon the desires and emotions of the character – to produce the "excruciating" pain implied by the name, one must (according to Bellatrix Lestrange) desire to cause pain purely for its own sake or for fulfilment. The extreme pain inflicted by the curse when cast so – without any apparent evidence of physical harm – makes it uniquely suited as a form of torture.
Boundaries: First, this is not a dueling spell. When you use crucio you don't use it cause you want to defeat your opponent, but because you want to torture him.
Restrictions: NEWT students(Tier 6) and above. This spell is used by sadistic people, so a good charrie wouldn't use it (dont ask my why Harry used it).
SectumsempraIncantation: Sectusempra
Description: Violently wounds the target; described as being as though the subject had been "slashed by a sword".
Boundaries: Its a violent gash, not a cut. James Potter got scratched cause the spell missed.
Restrictions: No one can use it. Why? Cause no one knows about the spell. If I see it being used I'll censor the word. Why am I putting it here? SO YOU GET THE MESSAGE
Slashing CurseIncantation: Gladius
Description: A gesture with the wand like a sword, and green flames erupt from it and go to the target. If it strikes, it shows no visible damage but harms target severally.
Boundaries: Difficult to cure, as it shows no exterior damage. Hard to block too, though easier to dodge (if from a distance)
Restrictions: NEWT students and above.
Wall of FireIncantation: Ignis Curus
Description: A spell that creates a wall of fire surrounding the caster. This wall blocks anything (including spells) from entering, though the wall will probably engulf the caster in several minutes.
Boundaries: -
Restrictions: NEWT level and above.
TIER 5 CursesThe Killing CurseIncantation: Avada Kedavra
Description: Causes a jet of green light, and a rushing. It leaves no mark of death. There is no known counter-curse or blocking spell (with the exception of the curse striking another Avada Kedavra spell mid-flight, negating both), although the caster can be interrupted, the victim can dodge the curse, hide behind solid objects (which burst into flame when hit by it), or, if the casting wizard is not sufficiently competent, the curse may be completely ineffective as described by Barty Crouch Jr (acting as Alastor Moody) in Goblet of Fire. It is the only spell that is designed to kill instantly.
Boundaries: Ineffective wizards can't use this spell effectively.
Restrictions: At least Tier 5.
MorsmordreIncantation: Morsmordre
Description: A spell that creates an image of the dark mark in the sky.
Boundaries: Lasts an hour.
Restrictions: At least Tier 5. Requires Dark Magic
Lightning BoltIncantation: Attonbitus
Description: An offensive spell which sends a bolt of lightning towards the victim, severely injuring and perhaps killing the target. More powerful wizards can use this spell to hit multiple targets. Very hard to dodge.
Boundaries: None.
Restrictions: At least tier 5.
Imperius CurseIncantation: Imperio
Description: One of the three unforgivables. This spell is used to control the mind of the target.
Boundaries: hard to resist, but some (like Harry) can.
Restrictions: At least tier 5.
TIER 4 CursesTIER 3 CursesCruor AtrumIncantation: Cruor Atrum
Description: An enchantment which blocks all people from entering an area unless they have the dark mark.
Boundaries: A talented wizard could get through, Works for about 30 minutes. Radius of about 15 meters at most. 30 for Tier 2.
Restrictions: Tier 1, 2 and 3 only. Requires Dark Magic
Waking NightmareIncantation: Morsomnium
Description: A curse that makes a victim fall into a semi- paralyzed state and suffer terrible nightmares for as long as the caster makes him, unless they can throw the spell off.
Boundaries: Like Imperio, the victim can throw it off
Restrictions: Tier 1, 2 and 3 only. Requires dark Magic
TIER 2 CursesNecromancyIncantation: Tibburias Vitis Cinis Mortuus
Description: Creates Inferi
Boundaries: Read about Inferi.
Restrictions: Tier 1, and 2 only. Requires dark Magic
Cruor SacrificumIncantation: Cruor Sacrificum
Description: An enchantment which blocks all people from entering an area unless they pay blood sacrifice. A minor wound will do
Boundaries: It lasts for several years if correctly done. You have to enchant an object that will only open if the person plays a blood sacrifice, INCLUDING the caster.
Restrictions: Tier 1 and 2 only. Requires dark Magic
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