Note that "face down" is not synonymous with "with its back face up." A manifested double-faced card is a 2/2 creature with no name, mana cost, creature types, or abilities
That said, context changes the answer to this question
This takes a minute to understand so let me walk ya through it
Optimal combinations grant additional effects or bolster existing abilities, granting a tremendous advantage in battle
When properly utilized, these cards greatly place the odds in their owner's favor, making the game less about strategy and more about who draws their powerhouse cards first
While Trainers are searching the wild for Pikachu wearing the TCG Hat, players will find that Wimpod and Golisopod are roaming the wild too