Your wish is Jirachi's command...

Admittedly, Jirachi isn't certain who the Thor is he is referring to, but if Loki is wishing for good fortune in battles to come, then really, there is only one possible way to fulfil that wish!

The night after the festival, Loki will find an Amulet Coin and the TM Payday. Fortune will now surely be heading his way.