Cheapest priced copy (Adventures in the Forgotten Realms): $0.99 at Card Kingdom, near mint, their price list as of .
Werewolf Pack Leader 
Creature — Human Werewolf · 3/3 · Rare · Adventures in the Forgotten Realms · #387
Pack tactics — Whenever this creature attacks, if you attacked with creatures with total power 6 or greater this combat, draw a card.
{3}{G}: Until end of turn, this creature has base power and toughness 5/3, gains trample, and isn't a Human.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
5 printings · $0.99 to $15.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Adventures in the Forgotten Realms | 211 | Rare | $0.99 | $1.49 |
| Adventures in the Forgotten Realms | 387 | Rare | $1.49 | $1.49 |
| Adventures in the Forgotten Realms Promos | 211a | Rare | — | $15.99 |
| Adventures in the Forgotten Realms Promos | 211p | Rare | $2.99 | $1.99 |
| Adventures in the Forgotten Realms Promos | 211s | Rare | — | $3.49 |
One ruling from Wizards of the Coast
- 23 July 2021The last ability will overwrite any previous effects that set Werewolf Pack Leader's power and toughness to specific numbers. Effects that otherwise modify its power and toughness will still apply no matter when they took effect. The same is true for +1/+1 counters. For example, if you cast a spell that gives Werewolf Pack Leader +1/+1, after that resolves it is a 4/4 creature. If you then activate its last ability, it will be a 6/4 creature.