Can a player play Sprite Call from hand (not hidden) during a showdown and move the sprite into the battlefield before the initial showdown is resolved?

Ruling: If defending, you can play the sprite directly to the battlefield (similar to how Shen works). If attacking, you cannot move during combat/showdowns.

Nuances:

• More precisely, you cannot use the standard move action during a combat/showdown
• You also cannot use standard move while there's a chain or while it's not your turn