Cheapest priced copy (Oath of the Gatewatch): $0.49 at Card Kingdom, near mint, their price list as of .
Dimensional Infiltrator 
Creature — Eldrazi · 2/1 · Rare · Oath of the Gatewatch · #44
Devoid (This card has no color.)
Flash
Flying
{1}{C}: Target opponent exiles the top card of their library. If it's a land card, you may return this creature to its owner's hand. ({C} represents colorless mana.)
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $0.49 to $4.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Oath of the Gatewatch | 44 | Rare | $0.49 | $2.49 |
| Oath of the Gatewatch Promos | 44s | Rare | — | $4.49 |
One ruling from Wizards of the Coast
- 22 January 2016You choose whether to return Dimensional Infiltrator to its owner’s hand as its ability resolves. If the exiled card is a land card, you can’t wait and return Dimensional Infiltrator at a later time.