If you control a "Valmonica" Monster Card: Apply 1 of these effects, or, if you control a "Valmonica" Link Monster, you can apply both, in sequence.
● Gain 500 LP, then you can destroy 1 Spell/Trap on the field.
● Take 500 damage, then you can return 1 monster on the field to the hand.
You can only activate 1 "Valmonica of the Guiding Rhythm" per turn.