Can Sprite Call be activated from a hidden battlefield to play the sprite at a different battlefield?

Ruling: No, Sprite Call must be played at the same battlefield where it is activated. The sprite is summoned to that battlefield.

Nuances:

• Spells played while hidden generally have their effects appended with <here> for targeting, indicating they affect the same battlefield
• Sprite Call cannot be played to a contested battlefield during an attack unless you control that battlefield, as it must follow regular play rules and doesn't explicitly state it can be played to any battlefield