If you reveal Zhonya's, does it count for Pit Crew?

To determine if revealing Zhonya's Hourglass from hidden triggers Pit Crew's ability ("When you play a gear, ready me."), we must look at the definition of "playing" a card from hidden.

Ruling

Yes, revealing and playing a Zhonya's Hourglass from hidden counts as playing a gear, which triggers Pit Crew.

Reasoning

1. Playing from Hidden: According to the Patch Notes (2025-10-24) and Rule 737.1.c.3, playing a card from facedown (or "from Hidden") is a formal action that opens a chain. While hiding a card (placing it facedown) is a discretionary action that does not count as playing, the act of playing that card from its hidden state is officially recognized as "playing" the card.
2. Card Type: Zhonya's Hourglass is a Gear card. When you play it from hidden, you are playing a gear.
3. Trigger Condition: Pit Crew's ability states: "When you play a gear, ready me." Since playing Zhonya's from hidden constitutes playing a gear, the condition for Pit Crew's triggered ability is met.

Sequence

1. You have Pit Crew on the board and a Zhonya's Hourglass hidden at a battlefield.
2. You play the Zhonya's Hourglass from hidden (this is the act of "playing a gear").
3. Pit Crew's triggered ability ("When you play a gear...") is placed on the chain.
4. The chain resolves, and Pit Crew readies.

Note: This interpretation is based on the official Patch Notes (2025-10-24) clarifying that playing from hidden is a formal play action, and the card type of Zhonya's Hourglass being Gear.