I've made this subclass for fun, and I wanted to make sure it was balanced without being too weak or too strong. I'm not too experienced with homebrewing subclasses, I took inspiration of some features from other subclasses, but overall I just wanted some input and whether or not it's balanced. I'm open to ideas and changes. It is in 5th edition
Curse Domain Spells
Level 1: Bane, Hex
Level 3: Bestow Curse, Blindness/Deafness
Level 5: Remove Curse, Hypnotic Pattern
Level 7: Banishment, Confusion
Level 9: Destructive Wave, Contagion
These spells are revolved around giving enemies de-buffs. All of them are meant to fit in the theme of the class that is causing enemies to have disadvantage or have unpleasant effects
You gain proficiency with heavy armour
The subclass is expected to be using spells most of the time, but I took the heavy armour idea from Twilight and Life Domain
At level 1, you learn the guidance cantrip. It has been extended to a range of 30ft, and can be used as a bonus action. Due to your dark magic, you can curse guidance and cause it to do the opposite of it's intended effect. It now has the option to subtract a creature's roll for a skill check using a d4. This must be done before the roll
I have given the guidance cantrip the option to instead reduce a creature's roll in a skill check rather than adding it with a d4. I wanted to do this to make it appropriate to the subclass with it being about curses. To compensate for a decent effect, I gave it more range and the option to use it as a bonus action. I am however aware that guidance doesnt fit the theme of a more evil subclass, but the intention was to have it be a cursed guidance effect, so that it made the complete opposite effect
At level 1, you can now inflict a curse on a creature. Using a reaction to activate, you can cause a creature within 15 feet of you to gain disadvantage on their attack roll when they make one. This must be done before they roll for attack. This can only be used a number of times equal to your Wisdom modifier per long rest (minimum of once).
This feature was created to give this subclass another curse ability. I felt like a feature that gives a creature disadvantage on an attack fits this subclass, however I am unsure if this is too strong or not, especially at this level. I figured that having it replenish only on a long rest was a good way to balance how many times you can use this. My initial thing was to have it give an option to give disadvantage on attack or saving throw, but I figured it was a bit too strong with the option. Should I make it a bonus action or keep it as a reaction?
Channel Divinity: Spiteful Wrath
Starting at second level, you can use your channel divinity to inflict dark magic on those around you
As an action, you present your holy symbol and release a mist of dark magic 30ft around you. Creatures of your choice within the radius must make a wisdom saving throw. If they fail, they take 1d8+cleric level necrotic damage and are now blinded or deafened (your choice) for a number of turns equal to your wisdom modifier. They can roll a constitution saving throw at the end of each of their turns or when they are attacked to remove this effect. If they succeed the wisdom saving throw, they take half damage and are not blinded or deafened. Additionally, when you roll for damage for Spiteful Wrath, you gain temporary hitpoints equal to that damage you rolled
This feature is somewhat similar to Light Domain in terms of dealing damage. It is weaker because of the other effects, such as being able to force creatures that failed the save to be blinded or deafened. The temporary HP gain is a nice benefit, but is that a bit too much for the divinity?
At level 6, you can use an action to cause a creature that you can see to lose its resistance to one damage type (that isn't piercing, bludgeoning or slashing) for 1 minute. When you cast Cursed Mutter or Cursed Chant on a creature, you can see one resistance that it has. This can only be done once per long rest. Additionally, you gain resistance to necrotic damage at this level
I initially had it as a bonus action to activate and the number of uses was equal to your wisdom modifier, but I realise that at this point, I have way too many different bonus action features and had to change it up. It's 1 minute per long rest effect, removing a resistance. I was suggested to give the subclass resistance to necrotic since that is what it's based around, so I added that in here
The power of Cursed Mutter is increased
Whenever you use Cursed Mutter, you can now have the option to reduce an attack roll or saving throw with a d4. Additionally, they take 1d4 necrotic damage when the creature has their roll reduced.
Potent Spellcasting does not increase the damage for this feature
Hey, there we go, a better upgrade for Cursed Mutter. While it isn't the best upgrade, it now has the option to reduce an attack roll, skill check or saving throw. The minor 1d4 damage is weak, and can't be boosted by Potent Spellcasting that will be available later in this level, but it's a decent way to do damage along with reducing rolls. My problem with this is that Spiritual Weapon will be far superior compared to this feature for damage, and both won't be able to be used at the same time, but the reducing roll is helpful in it's own way, especially for saving throws. I considered having the damage be 1d4+1 but wasn't sure I wanted to give extra damage for something that's unlimited and reduces rolls
Starting at 8th level, you add your Wisdom modifier to the damage you deal with any cleric cantrip.
I expect this class to rely on spells and cantrips due to being able to reduce saving throws now. And since other cleric subclasses can get this, I gave this subclass the Potent Spellcasting
At level 17, you gain immunity to curses, and creatures within 30ft of you lose resistance to necrotic damage. When you use Cursed Chant, you now use a 1d4+3 to reduce rolls and deal necrotic damage. Additionally, if the creature succeeds it's roll/save, it takes 2d4+3 necrotic damage instead of 1d4+3. When you use your channel divinity, you can choose one creature that succeeded it and force it to reroll it's save once.
Making this last subclass feature really made me think. I improved Cursed Chant/Mutter even further, but I at this moment I wasn't sure if this was balanced. Is this underwhelming for a capstone ability, or is the roll reducing too good? The extra 2d4+3 damage averages at least 7 damage if someone hits an attack, saving throw or skill. Because at first, when I thought it was pretty weak, I made it so that people lose necrotic resistance when they are close by. I thought this was situational, so I added one last thing, which was an ability to force a creature to reroll a save against Spiteful Wrath. I also added immunity to curses, so you no longer have to cast Remove Curse for anything that may affect you
To conclude, I really like the theme for this subclass, and I intend to keep the spells and the Cursed Mutter features. However, I wasn't too sure about some features, like Misfortune, and the range of the features, such as Cursed Mutter being 30ft. I am more concerned about the level 17 feature, Chaos Walking. This is because I am unsure if it's underwhelming or not, since the latest level I ever got to was level 15.
Is this cleric subclass balanced? If you have any suggestions on fixing anything up, I'm all ears
(If I messed up anything I needed to do for this post, this is my second time using this site, so I'll fix any errors if I made some)