Pendulum Effect
Each time you gain LP while you control a Fiend Monster Card in your other Pendulum Zone, place 1 Resonance Counter on this card. Once per turn, when an opponent's monster declares an attack, you can: Immediately after this effect resolves, Link Summon 1 "Vaalmonica" Link Monster.
Monster Effect
If this card is in your hand: You can discard 1 other card; take 1 "Dimonno Vaalmonica" from your Deck, and place this card and that card in your Pendulum Zones. During your Main Phase, if this card was Normal or Special Summoned this turn: You can banish 1 "Vaalmonica" Normal Spell/Trap from your GY; apply whichever effect on that card includes gaining LP. You can only use each effect of "Angello Vaalmonica" once per turn.