Pact of the Cursed Blade

A variant on the Hexblade subclass. 

 

Bonus proficiencies

You gain proficiency with medium armour and shields. 

Hex Weapon

You have made a pact with a sentient weapon, and thus you can wield it in combat. You are proficient with the weapon when you wield it, and you can use it as a spellcasting focus for your warlock spells.

Choose any ranged or melee weapon. This weapon counts as magical for the purpose of overcoming resistances from nonmagical weapons and attacks, and it is also sentient.
You can also use charisma, instead of strength or dexterity, to attack with this weapon.

If you later get pact of the blade, you may also use charisma to attack with the summoned weapon as well. Also, despite being sentient, it will let you bond to it with pact of the blade.

At level 5, the Hex weapon gets a +1 bonus to attack and damage rolls, and the bonus increases to +2 at level 9, +3 at level 13 and +4 at level 17.

Vicious Rampage

At level 6, whenever you reduce a creature to 0 hit points, you can bolster your senses and enter a rampage for a minute (10 rounds) or until you lose your concentration (as if you were concentrating on a spell).
You also activate your rampage f you land a critical hit (provided your rampage isn't active).

When your rampage is active, you score a critical hit at a natural 19 as well as on a natural 20. You also get a +2 bonus on dexterity saving throws and your AC.
During your rampage, you have advantage on wisdom(perception) checks. 

Quickspell

You gain the ability to cast cantrips and attack at the same time.
Every time you take the Attack action, you can use a bonus action to also cast a cantrip with a casting time of one action.
If this cantrip requires you to make an attack roll, you take a -2 penalty to that attack roll. If the cantrip requires the enemy to make a saving throw, they gain a +2 bonus to the saving throw.

Savage Rampage

When you reach 14th level, you and your patreon become even more in sync during battle.

You no longer need to hold your concentration in order to keep your Vicious Rampage active.

Additionally, you can activate your rampage at will using a bonus action. You can activate it this way a number of times equal to your charisma modifier, gaining back all expended uses when finishing a long rest.

Soul Siphon

Starting at 14th level, when you slay a creature using your Hex Weapon or your Pact Weapon, you can absorb part of your opponent's soul and use it to strengthen yourself.

Whenever you reduce a creature to 0 hit points, you can choose to regain hit points, or add bonus necrotic damage on your next weapon attack. The hit points regained and the damage dealt equals your level. Also, the weapon attack has to be made with either your Pact Weapon, or your Hex Weapon.