Medicine, Poison Doll

Deathtouch
Whenever a Human dies, put a +1/+1
counter on Medicine, Poison Doll
Whenever a Human dies you may pay {b}{g}
If you do, return Medicine, Poison Doll from
your graveyard to the battlefield.

Don't they know a walking tool is dangerous...
What exactly were the foolish humans thinking
when they threw something in the flower field?