Sedna, Mistress of the Sea

Deathtouch.
If {b}{b}{b}was used to cast Sedna, gain control of
X creatures an opponent controls, where X is the
number of creature cards in player's graveyard.
If {u}{u}{u} was used to cast Sedna, gain control of
X artifacts an opponent controls, where X is
the number of cards in target player's hand.