Card

Leveler

Mana cost {5}

When this creature enters, exile all cards from your library.

Part of 35 known combos, 10 of them two-card. 1 official ruling.

Bracket

B1 Exhibition — Not in the same deck as its two-card combo partners: Thassa's Oracle, Laboratory Maniac, Jace, Wielder of Mysteries, Doctor Doom, Unrivaled, Fractured Identity, Nexus of Fate, Fblthp, Impossibly Lost, Beacon of Tomorrows, Timestream Navigator, Elda, Conjurer of Spectacle
B2 Core — Not in the same deck as its two-card combo partners: Thassa's Oracle, Laboratory Maniac, Jace, Wielder of Mysteries, Doctor Doom, Unrivaled, Fractured Identity, Nexus of Fate, Fblthp, Impossibly Lost, Beacon of Tomorrows, Timestream Navigator, Elda, Conjurer of Spectacle
B3 Upgraded — Not in the same deck as its early two-card combo partners: Laboratory Maniac, Jace, Wielder of Mysteries, Fractured Identity, Nexus of Fate, Beacon of Tomorrows, Timestream Navigator
B4 Optimized — allowed: No restriction beyond the banned list
B5 cEDH — allowed: No restriction beyond the banned list

Two-card combo with Thassa's Oracle, Laboratory Maniac, Jace, Wielder of Mysteries, Doctor Doom, Unrivaled, Fractured Identity, Nexus of Fate, Fblthp, Impossibly Lost, Beacon of Tomorrows, Timestream Navigator, Elda, Conjurer of Spectacle (early with Laboratory Maniac, Jace, Wielder of Mysteries, Fractured Identity, Nexus of Fate, Beacon of Tomorrows, Timestream Navigator)

Bracket: Lotus Vault analysis, with Commander Spellbook flags

35 known combos, 10 of them two-card.

2021-03-19 · Wizards of the Coast
You won't lose the game until you try to draw from the empty library.

Rulings: Scryfall · Wizards of the Coast