Apply 1 of these effects. You must control a "Vaalmonica" Monster Card to activate and to resolve this effect. If you control a "Vaalmonica" Link Monster, you can apply both effects in sequence.
• Gain 500 LP, also for the rest of this turn, your opponent cannot target "Vaalmonica" Monster Cards you control with card effects.
• Take 500 damage, then you can negate the effects of 1 Effect Monster your opponent controls, until the end of this turn.
You can only activate 1 "Vaalmonica Chosen Melody" per turn..