Cheapest priced copy (Weatherlight): $0.35 at Card Kingdom, near mint, their price list as of .
Chimeric Sphere 
Artifact · Uncommon · Weatherlight · #148
{2}: Until end of turn, this artifact becomes a 2/1 Construct artifact creature with flying.
{2}: Until end of turn, this artifact becomes a 3/2 Construct artifact creature and loses flying.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper
1 printing · $0.35 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Weatherlight | 148 | Uncommon | $0.35 | — |
2 rulings from Wizards of the Coast
- 1 April 2008If the first ability is activated and resolves, then the second ability is activated and resolves, Chimeric Sphere will be a 3/2 creature. It won’t have flying.
- 1 August 2008A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn’t matter how long the permanent has been a creature.