Can I play Ride the Wind in response to Hidden Blade? If so, would Hidden Blade fizzle if I Ride the Wind to base?
No, you cannot play Ride the Wind in response to Hidden Blade.
Why you cannot play Ride the Wind
- Action vs. Reaction: Ride the Wind is an [Action] spell. According to Rule 158.2.a and FAQ 7535, [Action] spells can only be played during an Open State (when no chain exists) to start a new chain. They cannot be added to an existing chain.
- Closed State: Once Hidden Blade is played, it starts a chain, and the game state becomes "Closed." Only cards with the [Reaction] keyword can be played in a Closed State to respond to items already on the chain (Rule 338.1.a.1, Rule 813.1.c.1).
- Clarification on Hidden Cards: While Rule 811.6 states that a card played from "Hidden" gains the [Reaction] keyword, this only applies to cards being played from the facedown "Hidden" zone. Ride the Wind is not a card with the Hidden keyword, nor is it being played from the Hidden zone in this scenario; therefore, it does not gain [Reaction] and remains an [Action] spell.
Interaction Summary
Because you cannot play Ride the Wind in response to Hidden Blade, you cannot use it to move your unit to your base to make it an illegal target for the spell.
This is a critical distinction from cards like Fight or Flight. As noted in FAQs 8957, 5878, and 35, Fight or Flight is a [Reaction] spell. Because it has the [Reaction] keyword, it can be played in response to Hidden Blade while the chain is closed. If you were to play a [Reaction] spell that moves your unit to your base, Hidden Blade would then fail to resolve its effects because its target would become illegal (Rule 359.3.e.2).
Since Ride the Wind cannot be played in this window, it cannot be used to save your unit from Hidden Blade.