Cheapest priced copy (Kaladesh): $2.99 at Card Kingdom, near mint, their price list as of .
Nissa, Vital Force 
Legendary Planeswalker — Nissa · Mythic · Kaladesh Promos · #163p
+1: Untap target land you control. Until your next turn, it becomes a 5/5 Elemental creature with haste. It's still a land.
−3: Return target permanent card from your graveyard to your hand.
−6: You get an emblem with "Whenever a land you control enters, you may draw a card."
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
4 printings · $2.99 to $44.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kaladesh | 163 | Mythic | $2.99 | $7.99 |
| Kaladesh Promos | 163p | Mythic | $6.49 | $14.99 |
| Kaladesh Promos | 163s | Mythic | — | $15.99 |
| San Diego Comic-Con 2018 | 163 | Mythic | — | $44.99 |
3 rulings from Wizards of the Coast
- 20 September 2016A permanent card is an artifact, creature, enchantment, land, or planeswalker card.
- 20 September 2016You can activate Nissa's first ability targeting a land that's already untapped.
- 20 September 2016After resolving Nissa's first ability, the target land still has any abilities it had before it became a creature and any other types it had.