The lucky

These warlocks have found that luck is the true ruling force over the world. So these warlocks have found a way to make a pact with the luck itself. Giving them the ability to manipulate luck.

Loss of luck

Starting at level 1, you can 5 times per long rest you can subtract 1d(depending on your class level) from a die role a monster made.

Additive luck

At level 1, you can now 5 times per long rest re-roll a role you or your party members make.

Failure of luck

Starting at level 6, you gain the power to make a role a creature makes a d4 instead(a number of times equal to your class level).