Enduring Ideal + Erayos Essence

[Dsch]

Can I search my library for Erayos Essence (or Homuras Essence, or any other Essence) with Enduring Ideal? Even though they are flip cards, does they have the enchantment type to be a legal target for Ideal or they are only enchantments if flipped?

Could not find this one anywhere =l

[Tammit67]

From the Comprehensive Rules


508. Flip Cards
508.1. Flip cards have a two-part card frame on a single card. The text that appears right side up on the card defines the card’s normal characteristics. Additional alternative characteristics appear upside down on the card. The back of a flip card is the normal Magic: The Gathering card back.
508.1a The top half of a flip card contains the card’s normal name, text box, type line, power, and toughness. The text box usually contains an ability that causes the permanent to “flip” if certain conditions are met.
508.1b The bottom half of a flip card contains an alternative name, text box, type line, power, and toughness. These characteristics are used only if the permanent is in play and only if the permanent is flipped.
508.1c A flip card’s color, mana cost, expansion symbol, illustration credit, and legal text don’t change if the permanent is flipped. Also, any changes to it by external effects will still apply.
508.2. In every zone other than the in-play zone, and also in the in-play zone before the permanent flips, a flip card has only the normal characteristics of the permanent. Once the flip permanent in the in-play zone is flipped, the normal name, text box, type line, power, and toughness of the flip permanent don’t apply and the alternative versions of those characteristics apply instead.

Took me 5 seconds. But to answer your question concretely, unless the card is flipped and in play, you treat it as only the unflipped characteristics.