Does the Hidden rule 723.1.d restrict target choices for on-play triggers of units played from Hidden (like Blastcone Fae and Tideturner)?

Ruling: The current rule 723.1.d does not encompass choices made for triggers, but it is supposed to. The design intent is that abilities like Blastcone Fae's are restricted to the battlefield associated with the Hidden zone, but there will be a carveout that lets cards like Tideturner work as intended.

Nuances:

• The rule as currently written only applies to choices made when playing the card itself, not to trigger abilities that resolve afterward
• The Hidden mechanic will be reworked to clarify how choices should be made for Hidden cards' abilities
• Tideturner will have a specific exception to allow it to function as designed