Oracle

Instant - Trap 

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

Tournooi-info

Legal in: Vintage, Legacy, Modern, Commander

Officiele rulings

3/1/2010
If you cast Slingbow Trap for G, 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.

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