Be it an act of desperation, spite or whatever reason the author who desides, just before their pendants shatter the sirens cast a spell that turns the Rainbooms (Princess Twilight Sparkle optional) into sirens.
Be it an act of desperation, spite or whatever reason the author who desides, just before their pendants shatter the sirens cast a spell that turns the Rainbooms (Princess Twilight Sparkle optional) into sirens.