Sephiroth, One-Winged Angel

Flying, Vigilance, First Strike
When Sephiroth, One-Winged Angel enters the battlefield, for each opponent, choose a creature type.
{u}{b}: Destroy target creature that shares one or more creature types with the chosen types. If it's converted mana cost is less than Sephiroth, One-Winged Angel's converted mana cost, return it to the battlefield under your control.
"I will never be a memory"