Cheapest priced copy (Aetherdrift): $0.35 at Card Kingdom, near mint, their price list as of .
Gearseeker Serpent 
Creature — Serpent · 5/6 · Common · Aetherdrift · #43
Affinity for artifacts (This spell costs {1} less to cast for each artifact you control.)
{5}{U}: This creature can't be blocked this turn.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
4 printings · $0.35 to $0.79 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Aetherdrift | 43 | Common | $0.35 | $0.49 |
| Jumpstart 2022 | 302 | Common | $0.35 | — |
| Foundations Jumpstart | 314 | Common | $0.35 | — |
| Kaladesh | 48 | Common | $0.35 | $0.79 |
4 rulings from Wizards of the Coast
- 7 February 2025This card’s first ability can’t reduce the total cost to cast the spell below {U}{U}.
- 7 February 2025The total cost to cast this spell is locked in before you pay that cost. For example, if you control three artifacts, including one you can sacrifice to add {C}, the total cost of Gearseeker Serpent is {2}{U}{U}. Then you can sacrifice the artifact when you activate mana abilities just before paying the cost.
- 7 February 2025Once a player has announced that they are casting this spell, no player may take actions to try to change the number of artifacts its controller controls before the spell’s cost is locked in.
- 7 February 2025Once this creature has been blocked, activating its last ability won’t cause it to become unblocked.