Chimeric Sphere

{3} · Artifact

{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.

Motor: se resuelve a mano

Rulings (2)

A 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.
Wizards of the Coast · 2008-08-01
If 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.
Wizards of the Coast · 2008-04-01