mtg errata cards Magic The Gathering March of the Machine Single Card Rare Errant and Giada 224 R&D's Secret Lair MTG -

Shutting down your opponents spells on your turn is always awesome, but the fact that it creates two 1/1 tokens when you attack makes it incredible

Cyclonic Rift The ultimate reset button that only affects your opponents, clearing away their boards while leaving yours untouched

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I would probably play it in sealed, but not bother with it in draft since it's very slow

But I also think it has plenty of viability outside of cEDH

Other than that, Wizards of the Coast will occasionally tweet out new codes via the official MTG Arena Twitter account @MTG_Arena if something has gone wrong due to an update or downtime went on longer than expected