Alastor´s compeded duel

Alastor the fool was infamous for his childish attitude and his legendary skill playing rock paper scissors. You magically compelled a creature to play a three-round game of rock paper scissors, the loser of each round takes 1d6 psychic damage, creatures without hands are immune to this spell.

This spell’s damage increases by 1d6 when you reach 5th level (2d6), 11th level (3d6), and 17th level (4d6).