Cheapest priced copy (Mystery Booster 2): $0.69 at Card Kingdom, near mint, their price list as of .
Power Matrix 
Artifact · Rare · Mercadian Masques · #309
{T}: Target creature gets +1/+1 and gains flying, first strike, and trample until end of turn.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
2 printings · $0.69 to $34.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Mystery Booster 2 | 229 | Rare | $0.69 | $6.99 |
| Mercadian Masques | 309 | Rare | $3.49 | $34.99 |