Tarkir cards with Adventure can not be cast after casting their adventure
Adventure Cards can not be cast if you cast their adventure first. At all. Period. This appears to affect both players equally. In this game I cast the adventure, and my Stormshriek Feral could not be cast after I cast it's adventure (Flush Out). I could not see it, nor was anything exiled that I could see, nor was it in my graveyard.
My opponent also cast a Adventure card's adventure ( Rip the Seams ). Although I could see it beside their hand, they did not cast the creature ( Threadbind Clique ) , although they would have been best served casting it.
This appears to happen to cards in the Tarkir set (and possibly other sets) , but happens across formats, these logs include both historic and Jump In games
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Rezzahan#77802
commented
Targkir does not have any adventures, it has OMENS. Omens go back into the library.