Cheapest priced copy (March of the Machine): $0.35 at Card Kingdom, near mint, their price list as of .
Flitting Guerrilla 
Creature — Faerie Rogue · 2/2 · Common · March of the Machine · #105
Flying
When this creature dies, each player mills two cards. Then you may exile this card. When you do, put target creature or battle card from your graveyard on top of your library. (To mill two cards, a player puts the top two cards of their library into their graveyard.)
Legal inCommanderPioneerModernLegacyVintagePauper
Not legal inBrawlStandard
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| March of the Machine | 105 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 14 April 2023The triggered ability of Flitting Guerrilla triggers and goes on the stack without a target. If you exile Flitting Guerrilla, the second "reflexive" triggered ability will trigger. You'll choose the target creature or battle card for that second ability at that time. You may choose a card you just milled as the target or a card that was already in your graveyard.