Conceal Weaponry

Place creature spell from your hand onto the battlefield upside-down without paying it's mana cost. That creature gains +1/+1. (As long as a card is upside-down, it cannot be activated.).
{g}, exile this card from your graveyard, flip upside-down creature, and target player loses X life, where X is equal flipped creature's power.
"That blow would have been unforgettable if it hadn't caused memory loss."