Contagious Blightwater

Fortify {1}{b} ({1}{b}: Attach to target land you control. Fortify only as a sorcery. This card enters the battlefield unattached and stays on the battlefield if the land leaves.)
Whenever a land becomes fortified by Contagious Blightwater, create a token that is a copy of Contagious Blightwater.
{2}{b}{b}, sacrifice X lands fortified by Contagious Blightwater: Each player sacrifices X creatures.