Vanish Question

HI i just got Vanished and it won the game for the aggro rogue.

A very deciding factor was in which order the cards are returned to the hand. Because my hand was pretty full it destroyed about half of the minions from my board.

My question now is if anyone knows how the game decides which of my minions are destroyed and which are send to my hand? My first guesses were from left to right or from right to left but both of them were not the case. It kind of destroyed the strongest minions but my third guess is its just random!?

If that surprising card wouldnt have destroyed my Earth Ele i couldve replayed it and won the game -.-

Sad and very surprising moment xD

As far as I am aware, most if not all actions in Hearthstone are done in the order minions are played.

Ah okay. So the minions first played are returned to the hand first. Thanks