Ethereal Rat

Bestow{4}{b}{b}
Infect, menace
Whenever this creature deals combat damage to
a player, they discard two cards.
Enchanted creature gets +2/+2, and has infect,
menace and "Whenever this creature deals
combat damage to a player, they discard two
cards."

She spoils everything she touches, bringing plague and
devastation to their homes