Riddles in the Dark

Target player puts the top five cards of their
library into their graveyard. For each creature
card put into a graveyard this way, you lose 1 life
and draw a card.
All things this thing devours:
Birds, beasts, trees, flowers;
Gnaws iron, bites steal; Grinds hard stones to meal;
Slays king, ruins town,
And beats high mountains down.