Pearl Lake

{3}, {t}: Draw two cards.
{t}: add {u}{u}. Activate this ability only if you
have more cards in your hand than each of your
opponents.
{5}: Until end of turn, Pearl Lake becomes a
X/X blue Leviathan creature with: "This
creature can't be blocked", where X is the
amount of cards in your hand.
Pearl Lake can be your commander.