What did I have wrong? If Banisher of the Light is on the field you would not be able to pay the cost for Emergency Provisions because Emergency Provisions requires that the cards sent to pay the cost are sent to the "Graveyard". Thus if you can't send cards to the Graveyard you can't pay the cost and thus can't activate Emergency Provisions (must remain in your hand or set on the field, can't be played). For Lightning Vortex the same would apply if you don't have a card to discard for the cost of Lightning Vortex you can't activate Lightning Vortex.chaosruler said:Uh, read what you just said, I'm hoping you have it backwards >.<. From what you said, you doon't ahve to discard if you can't for Lightning Vortex, etc. And the ruling states that you cannot activate Emergency Provisions.
-chaosruler