Audrey II

Defender, reach, trample
Audrey II can attack as though it doesn't have defender as long as its power is 5 or greater.
Whenever another creature dies, put a +1/+1
counter on Audrey II.
Whenever a creature enters the battlefield, if it
has equal or lesser toughness than Audrey II's
power, destroy that creature.
At the beginning of each player's upkeep, if
Audrey II's power is greater than any player's life total, that player loses the game.