Twice in one match, my opponent used dubious challenge after having cast Unesh, Criosphinx Sovereign. Both times, my opponent got both creatures and I got nothing. Weird interaction, cost me a match in HoD.
I can confirm this. I have played a deck with both cards and when Dubious Challenge pulls Unesh, the creature the oponents should get instead enters the board on my side.
Can confirm. This happened to me as well.