Amethyst players have had the ability to manipulate the top card of their deck since The First Chapter - for example, with Yzma, Alchemist the player is able to look at and put the top card of their deck onto the bottom after questing if youre not a fan of what youre set to be drawing next
Similarly, if Kotose leaves the battlefield and later returns, you won't be able to play the cards that were exiled the first time it was on the battlefield
Use Trainer Cards to get an upperhand in battle
Shared Animosity is also in the list, but I leaned away from cards like Beastmaster Ascension simply because this is a Frogs deck, not a Beasts deck
What is this mystery card, and how do you get it
(Look at the top four cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.) Chaos: Whenever you roll Chaos, reveal the top card of your library