Cheapest priced copy (Innistrad: Midnight Hunt): $2.29 at Card Kingdom, near mint, their price list as of .
Primal Adversary 
Creature — Wolf · 4/3 · Mythic · Innistrad: Midnight Hunt Promos · #194p
Trample
When this creature enters, you may pay {1}{G} any number of times. When you pay this cost one or more times, put that many +1/+1 counters on this creature, then up to that many target lands you control become 3/3 Wolf creatures with haste that are still lands.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $2.29 to $11.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Innistrad: Double Feature | 194 | Mythic | $2.79 | $11.99 |
| Innistrad: Midnight Hunt | 194 | Mythic | $2.29 | $2.99 |
| Innistrad: Midnight Hunt | 363 | Mythic | $2.29 | $2.49 |
| Innistrad: Midnight Hunt Promos | 194p | Mythic | $3.49 | $8.99Out of stock |
| Innistrad: Midnight Hunt Promos | 194s | Mythic | — | $2.99 |
2 rulings from Wizards of the Coast
- 24 September 2021Any land that becomes a Wolf creature this way will retain any supertypes, card types, subtypes, and abilities it had.
- 24 September 2021After you pay the {1}{G} cost one or more times, a second ability triggers and you choose the targets for it. Players may respond to the new ability at that point. As that ability resolves, Primal Adversary gets its +1/+1 counters and the target lands become Wolf creatures.