Malrin, the Golden Lady

Forests you control are 1/1 green Elf creatures that are still lands.
Whenever a creature an opponent controls dies, you may return target land or creature card from your graveyard to your hand.
I know how to channel natures energy of life and death. What is living, bends to my will. What is dead, is not lost, but its spirit revives, what I tell it to do.