Infinite Gravity Knight

Fighter’s given cosmic abilities that control the fabric of spacetime. Whether they are born with this gift, are granted it by a deity, or were exposed to some overwhelming cosmic force, these warriors use gravity to crush their enemies.

Warp

At 3rd level you gain the ability to warp the fabric of spacetime using gravity. As a reaction, when you or a creature within 30ft of you is attacked, you bend reality and give the attacker a minus to the attack equal to your CHA modifier. (Minimum of 1)

You can use this feature a number of times equal to your proficiency bonus per long rest.

Goading Pull

You gain either the persuasion or intimidation skill, your choice, and you can add your proficiency modifier twice.

Intimidation

Expertise

Persuasion

Expertise

Gravity Well

Starting at 7th level you can embody the greatest form of gravity, a black hole. As an action you can activate this effect, that lasts for 1 minute:

In a 15ft sphere centered on you, gravity is warped to pull creatures in your direction. At the start of their turn, a creature must make a STR saving throw, on a failed save the creature is pulled 5ft closer to you. Creatures within 5ft of you have disadvantage on DEX saves, their speed is halved, and you have advantage on opportunity attacks against them.

You can use this feature once per short or long rest.

 

Event Horizon

At 10th level your control over space time increases. You can activate this using either an action or, if you are already using Gravity Well, a bonus action. 

The range of Gravity Well increases to 30ft, creatures who fail the save by over 10 also fall prone, and creatures within 5ft of you have to make a STR save at the start of their turn, on a failed save they take damage equal to your proficiency modifier as the sheer force crushes down on them. A creature within 5ft of you can only get away by making a STR save. The extra melee damage increases to a d8

The duration of Singularity 2 is 5min, if you increase to 2 using a bonus action with 1 already activated, either the time will reduce to 5 min, or if under 5, will be halved rounded up.

Orbit

Your ability to sense changes in the field of space time around you increases. At 15th level you gain tremor sense up to 30ft, and when Gravity Well is active, you know the location of any creature within that sphere.

Tremor Sense

Up to 30ft

Singularity

Starting at level 18, your Gravity Well ability becomes overwhelming. This ability can only be used if Gravity Well is already active. 
As an action you can cause your gravitational field to intensify exponentially, all creatures within 30ft of you take force damage equal to your proficiency bonus at the start of each of their turns, the STR saves made to stay more than 5ft away from you are made with disadvantage, and creatures who fail by a margin of 10 or more are pulled immediately to you (you may use a reaction to make 1 weapon attack on them as they enter your combat range) All creatures within 5ft of you are considered restrained. 

This ability lasts for 1 minute and can only be used once per long rest. After using this ability you gain 1 point of exhaustion. 

Special: whenever a creature dies while within 5ft of you, atomized and broken down into the crushing power of infinite gravity you are producing, this energy is stored (up to 3)  and can be released before the end of Singularity. As an action on your turn you can expend a charge to produce a Relativistic Jet of pure energy that moves in a 100ft line, each creature in that line must make a DEX save or take 2d10 x 2 force damage (half as much on success). The multiplier increases when you spend more than one charge; 2 charges = x3, 3 charges = x4.