Cheapest priced copy (Lorwyn Eclipsed): $3.49 at Card Kingdom, near mint, their price list as of .
Mirrorform 
Instant · Mythic · Lorwyn Eclipsed · #308
Each nonland permanent you control becomes a copy of target non-Aura permanent.
Legal inCommanderBrawlStandardPioneerModernLegacyVintage
Not legal inPauper
3 printings · $3.49 to $6.99 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Lorwyn Eclipsed | 59 | Mythic | $3.49 | $4.49 |
| Lorwyn Eclipsed | 308 | Mythic | $4.99 | $6.99 |
| Lorwyn Eclipsed Promos | 59p | Mythic | $5.49 | $4.99 |
4 rulings from Wizards of the Coast
- 17 November 2025Because the permanents aren't entering the battlefield when they become copies of the target permanent, any "When [this permanent] enters" or "[This permanent] enters with" abilities of the copied permanent won't apply.
- 17 November 2025If the copied permanent has {X} in its mana cost, X is 0.
- 17 November 2025The permanents copy exactly what was printed on the original permanent and nothing else (unless that permanent is copying something else; see below). They don't copy whether that permanent is tapped or untapped, whether it has any counters on it or Auras and Equipment attached to it, or any non-copy effects that have changed its power, toughness, types, color, and so on.
- 17 November 2025If the copied permanent is copying something else, then the permanents become copies of whatever that permanent copied.