You can Ritual Summon this card with "Nether Prediction Ritual". Must be either Ritual Summoned, or Special Summoned with "Prediction Princess Tarotrei". You can only use each of the following effects of "Nether Prediction Princess Tarotreith" once per turn.
FLIP: You can Special Summon 1 Flip monster from your Deck in face-down Defense Position.
(Quick Effect): You can activate 1 of these effects;
● Change any number of face-down monsters you control to face-up Defense Position.
● Change any number of face-up monsters you control to face-down Defense Position.