Cryptic Command was a great relief in this regard as it is such a nice cover all spell and means that you can free up the slot of your previously needed bounce card
You could probably beat some mono-white pile with Sanctifier since none of their other cards matter, but the fact it just shows up as the cherry on top of one of the best decks in the format that already presents a ton of other issues and can freely recast Sanctifier off Lurrus of the Dream-Den is a bit too much to handle
But there is one constant: players love dragons
If an effect would prevent the next time a red or white source would deal damage, it wouldn't prevent Bahamut's damage, despite him being both red and white, since his damage's source is colorless
It really is a card that could get out of hand quickly, so when it hits the table Id keep an eye on it
Honestly, if you paid anything above $15, I dont know what to tell you