Cheapest priced copy (Edge of Eternities): $0.35 at Card Kingdom, near mint, their price list as of .
Survey Mechan 
Artifact Creature — Robot · 1/3 · Uncommon · Edge of Eternities · #245
Flying
Hexproof (This creature can't be the target of spells or abilities your opponents control.)
{10}, Sacrifice this creature: It deals 3 damage to any target. Target player draws three cards and gains 3 life. This ability costs {X} less to activate, where X is the number of differently named lands you control.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Edge of Eternities | 245 | Uncommon | $0.35 | $0.49 |
4 rulings from Wizards of the Coast
- 25 July 2025To determine the number of differently named lands you control, count each land you control once, but only if its English name isn’t exactly the same as another land you’ve already counted this way.
- 25 July 2025Use the sacrificed creature’s power as it last existed on the battlefield to determine how many cards to draw with Susur Secundi’s last ability.
- 25 July 2025Once you announce you’re activating an ability, no player may take actions until after the ability has been paid for. Notably, opponents can’t try to remove lands you control from the battlefield at that time.
- 25 July 2025Once you determine the cost to activate Survey Mechan’s last ability, you may activate mana abilities to pay that cost. If the number of differently named lands you control changes while activating mana abilities (probably because you sacrificed one or more lands), the cost to activate the ability remains what you previously determined.