Sheoldred, Fanatic Queen

Swampwalk, Menace
Whenever a creature you control dies, you may
exile it and create x 1/1 colorless Phyrexian Mite
artifact creature tokens with toxic 1 and "This
creature can't block", where x is that creature's
power
Whenever a creature an opponent controls dies,
put it on the bottom of it's owner's library