Prowling Predator

Ambush {4}{g}{g} (Before blockers are declared, as long as a creature is attacking you, you may cast
this card for its ambush cost as though it had flash.
If you do, it blocks this turn if able.)
When Prowling Predator enters the battlefield, if you cast it for its ambush
cost, you may have it fight target creature
the attacking player or team controls.