Cheapest priced copy (Conspiracy): $0.35 at Card Kingdom, near mint, their price list as of .
Selvala's Enforcer 
Creature — Elf Warrior · 2/2 · Common · Conspiracy · #40
Parley — When this creature enters, each player reveals the top card of their library. For each nonland card revealed this way, put a +1/+1 counter on this creature. Then each player draws a card.
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Conspiracy | 40 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 29 May 2014If Selvala’s Enforcer leaves the battlefield before its ability resolves, the top card of each library will still be revealed and drawn, although no +1/+1 counters will be placed.
- 29 May 2014Except in some very rare cases, the card each player draws will be the card revealed from the top of their library.