Can a Hidden unit in a battlefield be used in response to a Temporary token dying during the Beginning Step to maintain control of the battlefield?

Ruling: Yes, you can respond to the Temporary trigger by flipping your Hidden unit (such as Teemo) to keep control of the battlefield and score it.

Sequence:

• During Beginning Step, Temporary trigger activates
• In response to the trigger, flip the Hidden unit
• The Hidden unit enters play and maintains battlefield control

Nuances:

• Hidden units enter play exhausted when flipped