Lot, Nephew of Abraham

When Lot, Nephew of Abraham enters the battlefield, create a 0/1 white Human creature
token named Lot's Wife.
At the beginning of your end step, if you control
no other creatures named Lot's Wife, sacrifice
Lot.
Whenever Lot or another creature you control
dies, you may pay {1}{b}. If you do, create a 2/2
black Human creature token.