Cheapest priced copy (Bloomburrow): $0.35 at Card Kingdom, near mint, their price list as of .
Mind Drill Assailant 
Creature — Rat Warlock · 2/5 · Common · Bloomburrow · #225
Threshold — As long as there are seven or more cards in your graveyard, this creature gets +3/+0.
{2}{U/B}: Surveil 1. (Look at the top card of your library. You may put it into your graveyard.)
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Bloomburrow | 225 | Common | $0.35 | $0.49 |