Cheapest priced copy (Zendikar Rising): $17.99 at Card Kingdom, near mint, their price list as of .
Ashaya, Soul of the Wild 
Legendary Creature — Elemental · */* · Mythic · Zendikar Rising · #179
Ashaya's power and toughness are each equal to the number of lands you control.
Nontoken creatures you control are Forest lands in addition to their other types. (They're still affected by summoning sickness.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
7 printings · $17.99 to $69.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duskmourn: House of Horror Commander | 170 | Mythic | $18.99 | — |
| The List | DSC-170 | Mythic | — | — |
| Zendikar Rising Promos | 179p | Mythic | $20.99 | $24.99 |
| Zendikar Rising Promos | 179s | Mythic | — | $69.99 |
| Secret Lair Drop | 2014 | Mythic | $27.99 | $37.99 |
| Zendikar Rising | 179 | Mythic | $17.99 | $27.99 |
| Zendikar Rising | 358 | Mythic | $22.99 | $39.99 |
5 rulings from Wizards of the Coast
- 25 September 2020As long as Ashaya is on the battlefield, it's affected by its second ability and thus its first ability counts itself.
- 25 September 2020Because damage remains marked on a creature until the damage is removed as the turn ends, nonlethal damage dealt to Ashaya may become lethal if lands you control leave the battlefield during that turn.
- 25 September 2020A land that's a Forest has the intrinsic mana ability "{T}: Add {G}."
- 25 September 2020The ability that defines Ashaya's power and toughness applies in all zones, not just the battlefield.
- 25 September 2020You can't play creature cards as lands; you'll still have to cast them as spells, and they'll enter the battlefield as lands (in addition to their other types).