Pact of the Grudge

You've made a pact with a creature of anger, malice, and vengeance.  While others may seek deals, twisted contracts, and long term soul snatching that will likely cause the Warlock to be forever damned, the Pact of the Grudge is more simplistic.   You agree to vent their eternal wraith on the deserving, and on those that wronged you in some way.   You don't care about their problems.  You don't care about the circumstances that brought them before you.   You are an agent of vengeance and wraith, and it's not your lot to understand.  Yours is to smash them beneath your boot, and move on.

Grudge Bearer

Expanded Spell List
You gain the following spells added to your spell list.  These do not count against the maximum number of spells you can learn.

Level 1     Compelled Duel, Bane

Level 2     Vortex Warp, Rime's Binding Ice

Level 3      Bestow Curse, Thunderstep

Level 4     Storm Sphere, Death Ward

Level 5    Destructive Wave, Contagion


In addition, you gain access to the Ire ability.   You gain a number of uses of Ire equal to your Proficiency Bonus, regaining all uses on a short rest.   As a bonus action, you may expend any number of Ire in your pool on a creature that you can see.   When you make an attack, or force a creature to make a saving throw, you can choose to invoke your Ire, removing all stacks on the creature and dealing damage to the creature equal to the number of Ire stacks on them.  After which, the attack or saving throw is rolled normally.

Creatures that attempt to attack you, or subject you to an effect to save against grants one stack of Ire to them per attack, even on a miss, without expending a use of your pool of Ire.   Ire damage 1d4 thunder damage, increased to 1d6 at level 5, 1d8 at level 10, and 1d10 at level 15.


Armor of Wrath
The anger of your patron protects you.  Starting at level 1, when unarmored, your AC is equal to 10 plus your Charisma Modifier plus your Dexterity modifier.  You can use a shield and retain these benefits.

 

Seething Vengeance

Starting at level 6, when a creature you can see attempts to damage you, or subject you to a saving throw effect, you may use your reaction to force them to make a Wisdom saving throw against your spell save DC.  On a failure, the creature, and all creatures within 10 feet of it take 1d10 plus your Charisma modifier Thunder damage.   This damage increases to 1d12 at 10, and 2d6 at level 15.

In addition, gain proficiency in Intimidation.  If you had proficiency in Intimidation, gain expertise in it instead.

Coward's Bane

Starting at level 10, when a creature with Ire moves more than 30 feet from you, or ends its turn more than 30 feet away from you, at the end of their movement you may use a free action to teleport to an unoccupied square adjacent to them.  Upon using the teleport, you force them to make a Dexterity saving throw.  On a failure, the creature takes 2d10 thunder damage.

Avatar of the Grudge

Starting at level 14, as an action, you may summon your grudge in physical form.  It appears as a medium creature, wreathed in flame and thunder, similar to the appearance as you.  it can occupy a space, but is immune to damage and effects that a save can end, but will place an Ire stack against any creature that attempts to attack it, or subject it to a saving throw.   The Avatar of the Grudge acts after you in initiative, and will attack the nearest hostile creature to it, unless ordered to attack a different creature, or take a different action, using the warlock's bonus action.

The Avatar has a movement speed of 50 feet, and has one attack.
Attack:  Equal the Warlock's Spell Attack score
Hit:  Target takes 1d10 plus the warlock's Charisma modifier score, and is subjected to one stack of Ire.

The Avatar lasts for 1 minute, the warlock dies, or is dismissed as a free action.  Once used, you cannot use the Avatar of the Grudge until after a long rest.