[+2]: scry 2.
[0]: look at the top card of your library. i fit's a land card or a creature card with converted mana cost less than or equal to the number of loyalty counters on nissa, steward of elements, you may put that card onto the battlefield.
[-6]: untap up to two target lands you control. they become 5/5 elemental creatures with flying and haste until end of turn. they're still lands.