Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Sengir Autocrat 
Creature — Human · 2/2 · Uncommon · Eternal Masters · #105
When this creature enters, create three 0/1 black Serf creature tokens.
When this creature leaves the battlefield, exile all Serf tokens.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
6 printings · $0.35 to $12.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Fifth Edition | 193 | Rare | $0.49 | — |
| Classic Sixth Edition | 155 | Rare | $0.59 | — |
| Eternal Masters | 105 | Uncommon | $0.49 | $0.99 |
| Homelands | 56 | Uncommon | $1.79 | — |
| The List | EMA-105 | Uncommon | $0.35 | — |
| Time Spiral Timeshifted | 45 | Special | $0.59 | $12.99 |
2 rulings from Wizards of the Coast
- 8 June 2016If Sengir Autocrat leaves the battlefield while its first ability is on the stack, its second ability triggers and exiles any Serf tokens that happen to be on the battlefield, and then its first ability resolves and gives you three Serf tokens.
- 8 June 2016Sengir Autocrat’s last ability exiles all Serf tokens, not just the Serf tokens its first ability created.