As two actions, you curse up to two creatures you can touch or see within 10 meters and within 5 meters of each other. Each creature must make a Will saving throw.

On a failure, whenever a creature makes a skill check or a saving throw before the spell ends, it rolls with disadvantage.

Augment

You can target two additional creatures for each additional mana expended. The creatures must be within 5 meters of each other when you target them.