Cheapest priced copy (Aether Revolt): $0.35 at Card Kingdom, near mint, their price list as of .
Watchful Automaton 
Artifact Creature — Construct · 2/2 · Common · Aether Revolt · #182
{2}{U}: Scry 1. (Look at the top card of your library. You may put that card on the bottom.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aether Revolt | 182 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 9 February 2017If you activate Watchful Automaton’s ability more than once, you’ll scry 1 each time. You won’t be able to look at multiple cards at once.