When Sprite Call is played hidden during a showdown, does the sprite spawn at base or at the battlefield joining the fight?

Ruling: When Sprite Call is played hidden, it spawns the Sprite at the battlefield where it was hidden, not necessarily where the showdown is happening. When played from hand, you may play the Sprite to base or any battlefield you control.

Nuances:

• Spells activated from hidden have the additional restriction of only being able to target things at that location (where applicable)