Ulamog, the Defiler

Commanders that run Ulamog, the Defiler most

Deck counts from EDHREC.

• Ulalek, Fused Atrocity: 16,043 decks
• Zhulodok, Void Gorger: 14,426 decks
• Animar, Soul of Elements: 5,355 decks
• Ultima, Origin of Oblivion: 4,605 decks
• The Infamous Cruelclaw: 2,561 decks
• Kozilek, the Great Distortion: 2,342 decks
• Rakdos, Lord of Riots: 2,327 decks
• Molecule Man: 2,183 decks

Often played with Ulamog, the Defiler

Cards that show up in the same decks on EDHREC.

• Zhulodok, Void Gorger
• Flayer of Loyalties
• Eye of Ugin
• Emrakul, the World Anew
• Ugin's Labyrinth
• Conduit of Ruin
• Calamity of the Titans
• Kozilek, the Broken Reality
• Ulamog, the Ceaseless Hunger
• Devourer of Destiny

Rulings

• 2024-06-07: If Ulamog is entering the battlefield directly from exile, it will see itself when determining which card has the greatest mana value among cards in exile. If that's Ulamog, which seems likely, it will enter with ten +1/+1 counters on it.
• 2024-06-07: Ulamog, the Defiler's first ability will resolve before Ulamog does. If Ulamog is countered or otherwise leaves the stack in response to its triggered ability, the triggered ability will still resolve as normal.
• 2024-06-07: Use the number of +1/+1 counters on Ulamog at the time its annihilator ability resolves to determine how many permanents defending player should sacrifice.
• 2024-06-07: Annihilator abilities trigger and resolve during the declare attackers step. The defending player sacrifices the required number of permanents of their choice before they declare blockers. Any creatures sacrificed this way won't be able to block.
• 2024-06-07: If a creature with annihilator is attacking a planeswalker, and the defending player chooses to sacrifice that planeswalker, the attacking creature continues to attack. It may be blocked. If it isn't blocked, it simply won't deal combat damage to anything.
• 2024-06-07: Ulamog, the Defiler has received a minor update to clarify that the target of the first ability exiles the top half of their library. Its updated Oracle text appears above.