Not A Bug Underworld Breach allowing noncreature cards to escape? I was able to cast Death's Shadow from my graveyard

[atomicCyan]

I was playing GDS against burn and had a combo turn with DRC in play, UB casting Bauble multiple times. After a few iterations, I noticed that the game would have allowed me to cast Death's Shadow and DRC from my graveyard for the normal UB Escape cost. I didn't do this, but the card shouldn't allow this right?

 

[ManaDrainThis]

This isn’t a bug. You can Escape any non-land card from your GY with Underworld Breach.