Cheapest priced copy (Kaladesh): $3.99 at Card Kingdom, near mint, their price list as of .
Animation Module 
Artifact · Rare · Kaladesh · #194
Whenever one or more +1/+1 counters are put on a permanent you control, you may pay {1}. If you do, create a 1/1 colorless Servo artifact creature token.
{3}, {T}: Choose a counter on target permanent or player. Give that permanent or player another counter of that kind.
Legal inCommanderPioneerModernLegacyVintage
Not legal inBrawlStandardPauper
2 printings · $3.99 to $7.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Kaladesh | 194 | Rare | $3.99 | $6.99 |
| Kaladesh Promos | 194s | Rare | — | $7.49 |
3 rulings from Wizards of the Coast
- 20 September 2016Abilities that trigger when counters are put on a permanent trigger when a permanent enters the battlefield with counters and when a player puts counters on a permanent.
- 20 September 2016You can pay {1} only once each time Animation Module's first ability resolves. You can't pay more to create extra Servo tokens.
- 20 September 2016If +1/+1 counters are put on more than one permanent you control at the same time, Animation Module's first ability triggers once for each of those permanents.