Hero card

Omniscience

Enchantment

SpellUsed once: what it does depends on when you cast it

Needs: Big Mana

Gives: Enchantment

In 1% of today's winning lists

Build a deck with Omniscience as the hero

Benefits from it

Erratic Apparition · Scrabbling Skullcrab · Entity Tracker · Fear of Infinity

Winning decks play them together

Marang River Regent · Kona, Rescue Beastie · Spider-Sense · Ashling, Rekindled · Ill-Timed Explosion · North Wind Avatar · Pia, Aether Ascetic · Lost in the Maze

Use instead if you don't have it

Weftwalking · Duskmourn's Domination · Thousand-Year Storm · Confiscate · Omnipresence · Web of Life and Destiny

Winning decks that play it

Temur Midrange (4)

Cards in the meta that answer it

Countersculpt (Azorius Control) · Get Lost (Azorius Control) · Inevitable Defeat (4-Color Control) · No More Lies (Azorius Control)