Main deck Duress allows for the Grixis variation to remove opposing Epiphanies from control decks or Esika’s Chariot from aggro decks. The power of the Grixis version comes from its hand disruption spells. The combination of Alrund’s Epiphany and Galvanic Iteration is overwhelming and most decks can’t compete with a deck that’s taking multiple turns in a row. However with the introduction of Midnight Hunt, control decks have taken a new form.
In the early stages of Standard 2021, Izzet Dragons took a stranglehold on the meta thanks to its combination of disruption and powerful threats. Grixis Epiphany is shaping up to be the top deck at Worlds this year.