OO Magic Episode 5: The Magic That Brings Good Luck - S0.E6

Frieren's Party test the spell on Stark, who proceeds to have exceptional luck. The path they pick has no monsters and he wins a grand prize. Seeing this, Sein asks Frieren to cast the spell on him. He then goes gambling, but later returns with no clothes. Stark wonders if the spell didn't work, but Frieren says that Sein is just bad.