Five mana to gain control of so many creatures is an incredible deal, and while you cant use those creatures to go after their former controller, you can certainly make use of them to take out another player
Nonetheless, you can't argue with drawing infinite cards
You have to discard to gain cards, but that means you can get rid of cards you dont need or trigger something else
Sheoldred, the Apocalypse has some amazing abilities, making her one of my favorite creatures to play
For example: Fun: I put Disrupt Decorum in my deck, so now I need to figure out how to use it to help me win. Not fun: This game has already lasted two hours, but I drew my Farewell, so I might as well cast it. (Thats right
Summary N's Darmanitan and Zoroark ex cards from Journey Together are highly valuable and have unique abilities