Cheapest priced copy (Mirage): $0.35 at Card Kingdom, near mint, their price list as of .
Dream Fighter 
Creature — Human Soldier · 1/1 · Common · Mirage · #63
Whenever this creature blocks or becomes blocked by a creature, this creature and that creature phase out. (While they're phased out, they're treated as though they don't exist. Each one phases in before its controller untaps during their next untap step.)
Legal inCommanderLegacyVintagePauper
Not legal inBrawlStandardPioneerModern
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mirage | 63 | Common | $0.35 | — |
2 rulings from Wizards of the Coast
- 4 October 2004If Dream Fighter is assigned to block a creature with Flanking, the Flanking ability and the Dream Fighter ability both trigger. The active player’s Flanking effect is put on the stack first and resolves after the Dream Fighter’s phasing out effect happen, so the Flanking does nothing.
- 4 October 2004Dream Fighter affects all creatures that end up blocking it, including ones that are members of bands.