Trap Hole

Trap Flip (Rather than cast this card from your
hand, you may pay {u}{b}{r} and put it face down as
an enchantment. It may be turned face up after its
controller's next upkeep, as an instant.)
Choose one —
•Counter target creature spell with power 2 or
greater.
•Whenever a creature with power 2 or greater
enters the battlefield, you may flip this card. If
you do, destroy that creature.