It does make for a better spectator experience when you flip it
P/T Number 455 Language English Legal Formats Alchemy, Brawl, Commander, Competitive Brawl, Historic, Legacy, Modern, Pioneer, Standard, Timeless, Vintage Rulings (6/6/2025) In the case where you can't choose a creature an opponent controls for Zenos's first ability (probably because your opponents control no creatures), other creatures will still get -2/-2 until end of turn when Zenos's first ability resolves
Summon: LeviathanSummon: Leviathan, in particular, is extremely potent in such builds as it delivers a Whelming WaveWhelming Wave for its first chapter and then draws you a card whenever one of those creatures attacks (a trigger for each one, that is)
Oddly enough, the foils in this set have seemingly kicked off a new style of treatment which affects the whole card, not just the art, which doesnt look good enough to make up for them being appreciably more difficult to read in play