If Jade Statue is animated by some other effect, you get an artifact creature with whatever power, toughness, and creature types (if any) are specified by that effect. If you subsequently use Jade Statue's ability during combat, it will become 3/6 and gain the creature type Golem in addition to those creature types until end of combat.
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.
A delayed triggered ability that refers to Jade Statue still affects it even if it's no longer a creature. For example, if Jade Statue blocks the Kashi-Tribe Warriors ("Whenever Kashi-Tribe Warriors deals combat damage to a creature, tap that creature and it doesn't untap during its controller's next untap step."), the Warriors' effect stops Jade Statue from untapping.
Magic: The Gathering · ™ & © Wizards of the Coast · Illus. Dan Frazier
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If Jade Statue's ability has been activated, abilities that trigger "at end of combat" will see Jade Statue as an artifact creature.
It can only make itself into a creature during combat phases and therefore it is difficult to get Auras placed on it.
