If you want to play a relatively fair and interactive deck, Tatyova, Benthic Druid is a great choice
Remember, to make this it must have a White color identity, not multi like Dismantling Blow and then cannot be a cantrip like Shelter or Wall of Omens that replaces itself when doing something else but an actual proper card draw spell
You can click here for the official Magic list of banned cards for every Magic format
Now, this seems to be all the more problematic for the health of the game considering the ridiculous prices that the MTG x Final Fantasy products are going for
Able to grab the best card for any situation from your sideboard, if you have a Karn on the field, you're prepared for anything
(Here's an example of someone erroneously concluding that spindowns are actually more fair because they did far too few tests