When playing Teemo, can you hide a Teemo unit directly from your champion zone, or do you need to first pay 1 energy to put it into your hand?

Ruling: You cannot hide a unit directly from your champion zone. You must first pay 1 energy to put the champion into your hand, then hide it from hand.

Nuances:

• The Hidden keyword does not specify "from hand," but the Hide action itself requires the unit to be in hand
• Teemo's legend ability that lets you put your champion into hand exists specifically to enable this hiding strategy