Cheapest priced copy (March of the Machine): $0.35 at Card Kingdom, near mint, their price list as of .
Expedition Lookout 
Creature — Merfolk Rogue · 2/3 · Common · March of the Machine · #56
Defender
As long as an opponent has eight or more cards in their graveyard, this creature can attack as though it didn't have defender and it can't be blocked.
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 56 | Common | $0.35 | $0.49 |
2 rulings from Wizards of the Coast
- 14 April 2023Once Expedition Lookout has legally attacked, causing its last ability to not apply by removing cards from graveyards won’t cause it to stop attacking. However, if you do so before blockers are declared (and it’s attacking in your direction), you will be able to block it.
- 14 April 2023Expedition Lookout’s last ability will apply if any opponent has eight or more cards in their graveyard, not necessarily all of them or even the one Expedition Lookout is attacking.