Hot on the heels of the 2020 Season Grand Finals, Wizards of the Coast has decided to ban the infamous Omnath, Locus of Creation in Standard and Brawl, and suspend the card in Historic. Additionally, Lucky Clover and Escape to the Wilds have also been banned from Standard, while Teferi, Time Raveler and Wilderness Reclamation have gotten an additional ban in Historic.
Omnath, Locus of Creation has been the mythic rare thorn in the side of many players prior to its ban, which is effective immediately. The ban of Uro, Titan of Nature's Wrath two weeks ago was not enough to quell the victory rates of Omnath-based decks completely, although it did slow it enough to give an in to Gruul decks as well as Dimir Rogues. In the end, all but nine out of the 32 decks in the 2020 Season Grand Finals were built around Omnath, Locus of Creation, and on the final day of that event, the three non-Omnath decks were eliminated before anyone else in the Top 8.
Beyond this, within Standard the Adventures archetype was more prevalent in the aforementioned Top 8 roster than Omnath was, with seven out of the eight players using the archetype. Removing Omnath, Locus of Creation from the format means that Adventures would probably become the strongest archetype in the format, and so Wizards of the Coast had to nip this in the bud. As such, they also banned Lucky Clover, a card which doubles Adventure spells cast, and Escape to the Wilds, which can ramp players immensely in this meta and also cause various explosive turns.
In Historic, Omnath, Locus of Creation was suspended alongside Teferi, Time Raveler and Wilderness Reclamation. Omnath is being suspended and is pending a ban or unsuspension now due to having seen a prolific rate of play in the format. Meanwhile, Teferi, Time Raveler and Wilderness Reclamation, cards which were previously on a suspension, are being banned completely with the acknowledgement that they would practically overrun the Historic format. Furthermore, Burning-Tree Emissary, another card due for reexamination following its suspension, has been unsuspended, with Wizards of the Coast citing that Gruul Aggro decks have been on a decline in Historic and that they think Burning-Tree Emissary is now fine for the format.
Finally, Omnath, Locus of Creation is also banned in Brawl. Wizards claims to value deck diversity in Brawl, given that it is an offshoot of Commander, Magic's current most-popular format and one that is as diverse as it is popular. This was Wizards of the Coast's key reason for banning Omnath, Locus of Creation, as Omnath has dominated the format as of late and, additionally, has the highest win rate. However, it is interesting to note that Omnath, Locus of Creation has not been banned in Historic Brawl.