Can you hide a card and instantly play it on the same turn?

Ruling: No, you cannot hide a card and play it instantly. You must wait at least until your opponent's turn.

Sequence:

• Hide the card during your turn
• Wait for your opponent's turn
• Play the hidden card anytime you have priority during your opponent's turn

Nuances:

• Hidden cards can only target things on the battlefield where they're hidden
• Cards that don't require targets (like Consult the Pass or Pakaa Cub) can be played whenever you have priority, such as when your opponent plays a unit with a trigger ability or uses their legend