Slingbow Trap

Text:

If a black creature with flying is attacking, you may pay rather than pay this spell's mana cost.
Destroy target attacking creature with flying.

Rulings:

• 3/1/2010 If you cast Slingbow Trap for <img src="/Handlers/Image.ashx?size=small&amp;name=G&amp;type=symbol" alt="Green" align="absbottom" />, you may target any attacking creature with flying, not just a black one.
• 3/1/2010 An “attacking creature” is one that has been declared as an attacker this combat, or one that was put onto the battlefield attacking this combat. Unless that creature leaves combat, it continues to be an attacking creature through the end of combat step, even if the player it was attacking has left the game, or the planeswalker it was attacking has left combat.