Gwyndolin, Hidden Son

Gwyndolin, Hidden Son is black and white.
When Gwyndolin, Hidden Son enters the battlefield, you may destroy target creature. If
you do, gain life equal to its converted mana cost.
{2}{w/b}{t}: Prevent the next source of damage to
Gwyndolin, Hidden Son. If white mana was
used to activate this ability, target tapped
creature doesn't untap during its next untap step.
If black mana was used, destroy target tapped creature.