Why would Teemo's Legend ability move a unit from champion zone to hand, and can champions be targeted/hidden while in the champion zone?

Ruling: As of version 1.1, you can hide directly from the champion zone. Teemo's ability to move from champion zone to hand exists primarily to obscure whether you're hiding Teemo specifically, making it less obvious which card you're hiding from your hand.

Nuances:

• The ability was likely designed before hiding from champion zone was allowed in the rules
• With current rules, this ability provides minimal benefit beyond obscuring which card is being hidden
• Hollowed Tomb is a card that can return units to the champion zone
• The champion zone currently functions mainly as where your chosen champion starts until played