Serqet, Goddess of Scorpions

Infect
When Serqet, Goddess of Scorpions enters the battlefield, sacrifice three creatures or exile Serqet, Goddess of Scorpions
{x}{b}{b}{g}{t}:Create X 0/1 black Scorpion tokens with infect
{g}{w}{t}: Scorpions you control get +1/+1