Nissa, the Cursed Golgarian

Nissa, the Cursed Golgarian costs {1} less to cast
for your nonland devotion to green and black.
When Nissa, the Cursed enters the battlefield,
you may search your library for a card, reveal it,
and put it into your hand. If you do, you lose
3 life.When Nissa, the Cursed Golgarian leaves
play, discard the top five cards of your library.
When you do, gain half the life equal to the
amount of damage that was done to you while
Nissa, the Cursed Golgarian was on the battlefield.