Leyline of the Void

Bracket

• B1 Exhibition — Not in the same deck as its two-card combo partner: Helm of Obedience
• B2 Core — Not in the same deck as its two-card combo partner: Helm of Obedience
• B3 Upgraded — Not in the same deck as its early two-card combo partner: Helm of Obedience
• B4 Optimized — allowed: No restriction beyond the banned list
• B5 cEDH — allowed: No restriction beyond the banned list

Why

• Two-card combo with Helm of Obedience (early with Helm of Obedience)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

1 known combo, one of them two-card.

• Helm of Obedience + Leyline of the Void
  Produces: Exile target opponent's library
  View on Commander Spellbook

Combos: Commander Spellbook

Rulings

• 2024-09-20 · Wizards of the Coast
  Tokens can still die while Leyline of the Void is on the battlefield.
• 2024-09-20 · Wizards of the Coast
  A player's "opening hand" is the hand of cards the player has after all players have taken mulligans. If players have any cards in hand that allow actions to be taken with them from a player's opening hand, the starting player takes all such actions first in any order, followed by each other player in turn order. Then the first turn begins.
• 2024-09-20 · Wizards of the Coast
  If your opponent discards a card while you control Leyline of the Void, abilities that check whether a card is discarded (such as Hollow One, or a madness ability of the discarded card) still work, even though that card never reaches that player's graveyard. In addition, spells or abilities that check the characteristics of the discarded card can find that card in exile.
• 2024-09-20 · Wizards of the Coast
  While Leyline of the Void is on the battlefield, nontoken creatures your opponents control won't die. They'll be exiled instead. Abilities that would trigger when those creatures die won't trigger.

Rulings: Scryfall · Wizards of the Coast