Reckless Reggie

When Reckless Reggie enters the battlefield,
you may draw {x} cards, then discard {x} cards.
Reckless Reggie's power is equal to the
number of artifacts in your graveyard.
{t}, Sacrifice an artifact: Return a artifact from
your graveyard to your hand and deal damage
equal to its converted mana cost to target
creature or planeswalker.