Cheapest priced copy (Commander Legends: Battle for Baldur's Gate): $0.59 at Card Kingdom, near mint, their price list as of .
Wharf Infiltrator 
Creature — Human Horror · 1/1 · Rare · Commander Legends: Battle for Baldur's Gate · #737
Skulk (This creature can't be blocked by creatures with greater power.)
Whenever this creature deals combat damage to a player, you may draw a card. If you do, discard a card.
Whenever you discard a creature card, you may pay {2}. If you do, create a 3/2 colorless Eldrazi Horror creature token.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
3 printings · $0.59 to $2.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Commander Legends: Battle for Baldur's Gate | 737 | Rare | $0.59 | — |
| Eldritch Moon | 80 | Rare | $0.69 | $1.49 |
| Eldritch Moon Promos | 80s | Rare | — | $2.49 |
2 rulings from Wizards of the Coast
- 13 July 2016Wharf Infiltrator's last ability triggers anytime you discard a creature card, not just when you discard a card because of Wharf Infiltrator's other triggered ability.
- 13 July 2016While resolving Wharf Infiltrator's last ability, you can't pay {2} multiple times to get multiple Eldrazi Horror tokens.