Nadu, Winged Wisdom is one of the strongest and most despised Magic: The Gathering cards to drop into the Modern format through Modern Horizons 3.
The issue many MTG players are having with Nadu, Winged Wisdom is that the Simic-colored Rare is warping the Modern format, much like what Oko, Thief of Crowns did to Standard when Throne of Eldraine was released. Played in Bant colors at the Modern Horizons 3 Pro Tour and referred to as Bant Nadu, the build dominated the field and the top eight. Many players after the Pro Tour called for the Legnedary Bird Wizard to get banned, including Simon Nielsen, who won the tournament with Bant Nadu.