Timetwister basically resets the game, except it leaves all permanents alone
The method of "triggering the cards set between Infiniti and Zero" has been complicated to reproduce, so it has been changed to forcibly activate the Darkness/Trap B corresponding to zero
120/132 Rocket's Secret Experiment
There are a myriad of new effects that can negate monster effects, also, or that can get rid of your Umi before applying the effect
Effective how to ship trading cards techniques prevent this, maintaining PSA-grade potential and avoiding costly returns
Hating on Collected Company, Goryo's Vengeance, and Through the Breach is a big deal all by itself, and when you throw in all of the other weird cards that Mistcaller happens to be good against, it wouldn't be surprising to see people try to squeeze a copy or two into their sideboards