Dekrat's Anti-Spellcasting Measures

Base Sublass: Swashbuckler

A man born into nobility, with a legacy of great achievements, yet devoid of the qualifications, for he carries the weight of his lineage.

"Sortilege," a Gallian word used for sorcerers, are unlike wizards or others; they're given the power to weave magic as their birthright. You too are this so-called "Sortilege," but your way of weaving spells are quite different from your peers; you combine the power of spells, excessive guile, and the right amount of audacity.

Level 3: Sorcerous Focus

Magic flows through all living beings. While others harness it for spells, you've learned to channel it ~~to lock in~~ into razor-sharp focus.

As a Bonus Action, you gain the following benefits for 1 minute:

You have Advantage on WIS/INT/CHA Save against spells and other magical effect.
You can't have Disadvatage on Dexterity-based weapon attacks.
You are under the effect of Detect Magic spell. This does not require Concentration, though the duration last so long your Sorcerous Focus is active.

You can use this feature twice without suffering adverse effects. Each additional use before a Long Rest imposes 1 level of Exhaustion.

You regain all expended uses when you finish a Long Rest.

Level 5: People's Eyebrow

With a simple raise of your eyebrow, you possess the uncanny ability to disrupt and foil a spellcaster's magic.

When a creature you can see cast a spell or attempt to Teleport while within 60 feet of you, you can take a Reaction to force the target to make a CON Save against your Cunning Strike DC. On a failed save, it takes (Sneak Attack) Force damage and its spell or Teleport fails. On a successful save, the target only takes half damage.

You can use this Reaction a number of times up to your Proficiency Bonus. You regain all expended uses when you finish a Long Rest.

Level 5: Dekrat's Special

You've seamlessly blended your innate magic with your skillful bladework.

You have learn additional Cunning Strike options, which are described in the "Dekrat Special Options" section later in this gimmick's description.

When you finish a Long Rest you can change the list of Cunning Stike Options you know, choosing from this list or what's available on the Rogue's Class. The number of Cunning Strike Options you can have at any given time can't exceed cannot exceed your Proficiency Bonus + 1.

Level 7: Sorcerous Restoration

Your innate magic helps you recover your focus more quickly. When you finish a Short Rest, you regain one expended use of your Sorcerous Focus.

Additionally, while your Sorcerous Focus is active, You can apply two Cunning Strike option when you deal Sneak Attack damage.

Dekrat's Special Options

Dekrat's Special options appear in alphabetical and level requirement order.

Transmute
Level 5+ Rogue
Cost: 1d6: The attack damage type's becomes to one of the following damage types of your choice: Acid, Cold, Fire, Lightning, or Thunder. If this option is used with another Cunning Strike option, the damage type of that option becomes the one chosen in this option instead.
Cutting Words
Level 5+ Rogue
Cost: 1d6: The attack damage type's becomes Psychic and the target has Disadvantage on the next Ability Check or Attack Roll it makes before the end of its next turn.
Gag Order
Level 5+ Rogue
Cost: 2d6: You takes out the target's ability to speak. It must succeed a CON Save or it has the Silenced condition. At the end of each of its turns, it repeats the save, ending the effect on itself on a success.
Blitz
Level 5+ Rogue
Cost: 2d6+: After hitting the target with a Melee attack, you Teleport up to 30 feet to an unoccupied space you can see. The distance you can Teleport to increases by 30 feet for each additional 2d6 you forgo: 4d6 (60 feet), 6d6 (90 feet), 8d6 (120 feet) and the maximum of 10d6 (150 feet).
Flay Skin
Level 5+ Rogue
Cost: 3d6: The attack damage type's becomes Necrotic and the target must succeed a CON Save or it has Vulnerability to Bludgeoning, Piercing, and Slashing damage. At the end of each of its turns, it repeats the save, ending the effect on itself on a success.
Nether Swap
Level 7+ Rogue
Cost: 3d6: You attempt to switch position with the target. It must succeed a CHA Save or the target instantly appears in your space, while you appears in the target's space.
Serrated Edge
Level 7+ Rogue
Cost: 1d6: The attack damage type's becomes Force damage. If this option is used with another Cunning Strike option, the damage type of that option becomes Force instead.
Aftershock
Level 7+ Rogue
Cost: 3d6: The attack damage type's becomes Thunder and the target is surounded by booming energy.
Until the start of your next turn, the target takes (Proficiency Bonus) Thunder damage for every 10 feet it willingly move.
Banishment
Level 7+ Rogue
Cost: 4d6: You attempt to banish the target to ~~Cibubur~~ a harmless demiplane. It must succeed a CHA Save or it is Banished. While banished in this way, its Speed is 0, and it has the Incapacitated condition. At the end of its next turn, the target reappears in the space it vacated or in the nearest unoccupied space if that space is occupied.
Closed Circuit
Level 9+ Rogue
Cost: 3d6: The attack damage type's becomes Lightning and each creature in a 15-foot Sphere originating from you must succeed a CON Save, or take (Total Damage Roll) Lightning damage and its Speed becomes 0 until the start of your next turn (only half damage on success).
Flare Burst
Level 9+ Rogue
Cost: 4d6: The attack damage type's becomes Fire and each creature within 15-foot Cone originating from the target makes a DEX Save, taking (Total Damage Roll) Fire damage on a failed save or half as much on a successful one.