If a monster you control is destroyed by a card effect activated as Chain Link 2 or higher, this card can be activated after the current chain resolves.
After "Scramble Egg" is activated, even if the destroyed monster is no longer in the Graveyard, the effect is applied normally. ("Sonic Chick" is Special Summoned.)
This card can be activated while "Necrovalley" is active. When resolving "Scramble Egg", if you Special Summon 1 "Sonic Chick" from your hand or Deck, the effect is applied normally, but if you Special Summon 1 "Sonic Chick" from your Graveyard, the effect is negated.