Cheapest priced copy (Lorwyn): $0.35 at Card Kingdom, near mint, their price list as of .
Marsh Flitter 
Creature — Faerie Rogue · 1/1 · Uncommon · Lorwyn · #125
Flying
When this creature enters, create two 1/1 black Goblin Rogue creature tokens.
Sacrifice a Goblin: This creature has base power and toughness 3/3 until end of turn.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $1.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn | 125 | Uncommon | $0.35 | $1.49 |
| Modern Masters | 91 | Uncommon | $0.35 | $0.49 |
| The List | LRW-125 | Uncommon | $0.35 | — |
| Zendikar Rising Commander | 46 | Uncommon | $0.35 | — |
One ruling from Wizards of the Coast
- 1 October 2009The effect from the ability overwrites other effects that set power and/or toughness if and only if those effects existed before the ability resolved. It will not overwrite effects that modify power or toughness (whether from a static ability, counters, or a resolved spell or ability), nor will it overwrite effects that set power and toughness which come into existence after the ability resolves. Effects that switch the creature's power and toughness are always applied after any other power or toughness changing effects, including this one, regardless of the order in which they are created.