The Devious

Many patrons are picky about who they support or strict on how they're willing to support their followers; your patron however, seems awfully lax compared to the stories you've heard. They did not hesitate to open the doors of magic to you for practically no cost to you, and your contract seems to have no strings attached. Surely this blessing must have some catch... And indeed it does. Your patron is a cruel and mischievous creature, and they've made you the target of all their devious schemes and pranks. They hold no respect towards you, and look forward to seeing you crash and burn as they gently pull the strings behind the scenes to ensure the fates are not kind to you.

Expanded Spell List

At 1st level, your patron gets you access to some extra spells you have the option to learn. The following spells are added to your warlock spell list:

1st level: Alarm, Catapult.

3rd level; Flame Blade, Heat Metal.

5th level; Haste, Call Lightning.

7th level; Death Ward, Private Sanctum.

9th level; Animate Objects, Modify Memory.

Chaotic Surge

At 1st level, your patron endows you with a gross amount of magical power, too much for you to feasibly handle. Whenever you cast a warlock spell of 1st level or higher, your DM may choose to secretly roll a d20. On a 1 or 20, you must roll on the Wild Magic Surge table.
In addition; once per short rest, you may cast a warlock spell at a level matching your highest level spell slot without expending a spell slot. Whenever you cast a spell this way, you must roll on the Wild Magic Surge table immediately after the spell is cast.

 

Spread The Chaos

At 6th level, your patron's hunger for pranks and mischief extends to not only you, but any other mages in the vicinity. When a creature casts a spell within 30 feet of you, you can use your reaction to try and turn their spell into a volatile clump of chaos. The creature rolls a saving throw using their spellcasting modifier against your spell save DC. On a failure, their spell fails as if hit by Counterspell, and they roll on the Wild Magic Surge table. On a success, their spell is unaffected, but they roll on the Wild Magic Surge table immediately after they finish casting their spell. If they succeed by 5 or more, they are completely unaffected.

 

You can use this ability a number of times equal to your proficiency modifier, and you replenish all expended uses after a long rest.

I've Seen Worse

At 10th level, you've grown numb to your patron's pranks and schemes, to the point that very little fazes you. You are immune to the frightened condition, and are resistant to psychic damage.

Gift of Chaos

At 14th level, your patron has become impressed with your ability to survive their tomfoolery, and is willing to let you point them towards folk who are less prepared to handle their trickery. As a bonus action, you can mark a creature to be the victim of a barrage of chaotic energy; they roll a Constitution saving throw against your spell save DC. If they fail, they roll on the Wild Magic Surge table, and roll again for every 5 points they fail by. You may force them to reroll any amount of their results on the table once; they must use those new rolls. On a success, nothing happens. When you use this feature, you may not use it again until you take a long rest.