Circle of Infernal Power

Pay 1 life
A creature card in your hand gains Flash until
the end of the Turn
Add 3 mana of any combination of {b} and {r}
Warding: When a creature without flying and a
power of 3 or greater attacks you. (You may pay
{3} to put this card into play face down attached to
a land. In response to the trigger condition, you
may tap the land and reveal the card. If you do,
play the spell and copy it once. )
"Scratch one line and it pounces."