Vigilance
Whenever an artifact or creature an opponent controls enters untapped, they may tap that permanent. If they don’t, you create a 1/1 white Vampire creature token with lifelink.
"There's a whole world under the surface, waiting for the light of our salvation."
If the permanent is tapped as the ability resolves, the opponent can't choose to tap it, so you'll create a Vampire token. Similarly, if it's no longer on the battlefield as the ability resolves, they can't choose to tap it, and you'll create a Vampire token.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.