Well, with Oath of the Gatewatch, Nissa now has 4 different versions. Unlike some other planeswalkers, Nissa hasn't changed colors and tends to seemingly sticking around what mono greens likes to have. But who do you think are the better versions of her? Feel free to explain why.
Her cards include:
Nissa Revane
Nissa, Worldwaker
Nissa, Vastwood Seer/Nissa, Sage Animist
Nissa, Voice of Zendikar
BK'rrik Goodstuff
GWSythis Enchantress
URYusri Coin Flip
BRGKorvold Tokens
BGUYarok Lands Matter
WUBRaffine Looter