Cards cannot be added from the Main Deck to your opponent's hand except by drawing them
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And here is another
Its a fine benefit, but honestly hes been powercrept since at least 2017 back when Kess, Dissident Mage was introduced similar ability (not quite as good since Dralnu can activate on opponents turns and potentially multiple times if you can untap him) but for a cheaper mana cost and gives you access to a third color but most importantly Kess doesnt threaten to sacrifice all your permanents if the Red player at the table hits you with some burn spell
This would be great in a format with Lightning Bolt, Counterspell, Archmages Charm, and Prismatic Ending
Looking at the release map for new Universes Beyond sets this year, I think it will create fatigue rather than hype. Community strength Beyond the hype generated by new IP, media moments, and the thrill of the gamble, is something far more wholesome