Alyssa, Murderous Shadow

Hexproof, Indestructible,
Double Strike, Vigilance
Alyssa's Toughness is equal to X Her
Power is equal to your devotion to black
Opponents must pay {1}
for each creature attacking you,
otherwise their creature goes under your control.
"The world is already mine,
it just doesn't know it yet" - Alyssa