Silas, Night Perverted

Haste, Menace, Lifelink
Sacrifice a creature: put +1/+1 counters on Silas,
Night Perverted equal to the sacrificed creature's
toughness
{w}{w}: Each opponent loses life equal to Silas'
Power, and you gain life equal to the life lost
this way. Transform Silas.
"RWAAAAAR!!!"