Blaire's Magical Manual
With this hex, I actually make people have some good luck déjà vu. People actions usually get better, like hitting a foe you thought you missed. This is actually helpful, and it's effects can be extended when I laugh.
"The witch can grant a creature within 30 feet a bit of good luck for 1 round. The target can call upon this good luck once per round, allowing him to reroll any ability check, attack roll, saving throw, or skill check, taking the better result. He must decide to use this ability before the first roll is made. At 8th level and 16th level, the duration of this hex is extended by 1 round. Once a creature has benefited from the fortune hex, it cannot benefit from it again for 24 hours." – Advanced Player's Guide, Paizo 2010