When it comes to these kinds of cards, getting it graded by BCA or Beckett is encouraged, but not a requirement
Yes, you have to discard three random cards at your next upkeep, but in an ideal world, the three cards you draw can all be used before your next upkeep, leaving you with just lands or an empty hand to discard.
Conclusion: There is no real conclusion, but for fun Ill pull out my personal top 3: Do with that what you will, or dont and feel free to comment your favorite looter, card advantage engine, or phyrexian below
These cards show her progression, even in mechanics, as her second card is slightly stronger
"OP14-045 Kuroobi" gains [Rush] when a card is trashed from your hand by an effect, allowing it to attack immediately while still benefiting from the DON