Norgorber, The Gray Master

{3}: Put a creature from your hand onto the battlefield face down, it is a 2/2 creature.
Each face down creature you control has morph
{x}, where {x} is its converted mana cost
Whenever a creature you control is turned face
up, you may cast an instant spell from your hand
or graveyard by paying life equal to its mana
value rather than paying its mana cost