Serehna, The Black Blade

Deathtouch

Whenever Serehna, The Black Blade becomes the
target of a spell or ability you don't control, she
gains "Whenever Serehna, The Black Blade deals
combat damage to a player, that player loses the
game."

{b}{b}{b}: Serehna, The Black Blade gains first
strike and vigilance until end of turn.