Can gear be used the turn they come into play?

Ruling: Yes, gear can be used the turn they enter play if they enter readied (untapped). If a gear is readied, you can use any exhaust abilities on it.

Nuances:

• Gear enter readied unless they say otherwise
• Gear can only be used on other players' turns if they have the Action or Reaction keywords
• Gear without Action or Reaction keywords can only be used during your turn in a Neutral Open State (no chain, no showdown)