It was said that Whizbang would reverted after the twist season and now that the Twist season is done, he still plays Doomsday decks.
This will be changed on Tuesday’s patch:
[Hearthstone] Whizbang the Wonderful has been reverted to its normal effect (it was temporarily changed due to March’s Twist season).
they’ve also somehow broken the portraits, it’s now only using default portraits instead of our favorites