Cheapest priced copy (Core Set 2020): $1.29 at Card Kingdom, near mint, their price list as of .
Nightpack Ambusher 
Creature — Wolf · 4/4 · Rare · Core Set 2020 Promos · #185p
Flash
Other Wolves and Werewolves you control get +1/+1.
At the beginning of your end step, if you didn't cast a spell this turn, create a 2/2 green Wolf creature token.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $1.29 to $13.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Jumpstart 2022 | 696 | Rare | $1.79 | — |
| Core Set 2020 | 185 | Rare | $1.29 | $3.99 |
| Core Set 2020 Promos | 185 | Rare | — | $13.99 |
| Core Set 2020 Promos | 185p | Rare | $3.99 | $4.99 |
| Core Set 2020 Promos | 185s | Rare | — | $5.99 |
4 rulings from Wizards of the Coast
- 12 July 2019If you cast a spell that was countered, Nightpack Ambusher’s last ability doesn’t trigger.
- 12 July 2019Because damage remains marked on a creature until it’s removed as the turn ends, nonlethal damage dealt to other Wolves and Werewolves you control may become lethal if Nightpack Ambusher leaves the battlefield during that turn.
- 12 July 2019A creature that’s both a Wolf and a Werewolf gets only +1/+1 from Nightpack Ambusher’s ability.
- 12 July 2019Nightpack Ambusher looks at the entire turn to see if you have cast a spell, even if Nightpack Ambusher wasn’t on the battlefield when that spell was cast. Notably, you won’t get a Wolf token during your end step if you cast Nightpack Ambusher during your turn.