Onyxia Puzzle 6 Broken by Snowfall Graveyard Change

[Diablotine-2816]

Same here :

Book of Mercenaries (Onyxia 6/8) is impossible

Hello, I’ve already searched on the internet how to solve the 6/8 Onyxia puzzle from the book of mercenaries, but it’s impossible, in the videos the card that activates the last breath twice costs less. The mana cost of the card was increased and the puzzle became impossible, how did blizzard make a mistake like that? If anyone knows how to solve this puzzle, help me as I’ve been unsuccessful for weeks, even searching on the internet. Screenshots: postimg.cc/gallery/CLkkc7n