Can you react to a Sprite token dying from the Temporary keyword, specifically to reveal a hidden card like Teemo at the Sprite's battlefield?

Ruling: Yes, you can react to a Sprite token dying from Temporary. The Temporary keyword is a triggered ability that goes on the chain during the Beginning Phase, so it can be reacted to.

Sequence:

• Temporary triggers during the Beginning Phase
• The triggered ability goes on the chain
• Players can react to it before it resolves

Nuances:

• This allows plays like hiding Teemo at a battlefield conquered by Sprite, then revealing it in response to Temporary triggering the next turn
• You cannot hide a card and reveal it in the same turn