Forum:Field Spell Rulings Clarification

What is the ruling for when a card activates that negates the activation on the field spell after a turn has passed of the field spell being activated, say I have Sanctuary activated on my turn, then the turn changes and my opponent attacks then chains a card like Yosenju's Secret Move while they control a Yosenju, would my field spell be destroyed by the trap, or would the trap be useless when activated? Thanks :)DeceitfulNinja (talk • contribs) 02:56, December 27, 2015 (UTC)