Doomsday--does it RFG your cards face-up or face-down?

[Tha Gunslinga]

Yeah.

[Wagner]

Doomsday

Sorcery, BBB (3)
Search your library and graveyard for five cards and remove the rest from the game. Put the chosen cards on top of your library in any order. You lose half your life, rounded up.

217.7b Cards in the removed-from-the-game zone are kept face up and may be examined by any player at any time. Cards “removed from the game face down” can’t be examined by any player except when instructions allow it.

So, unless specified, the cards will be face up.