Kozilek, Butcher of Truth

Card Name

Kozilek, Butcher of Truth

Mana Cost

10

Type

Legendary Creature – Eldrazi

Rarity

Mythic Rare

rules Text

When you cast this spell, draw four cards.Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)When Kozilek, Butcher of Truth is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

Legal Formats

Commander, Legacy, Modern, Vintage

Not Legal Formats

Alchemy, Brawl, Explorer, Historic, Pauper, Pioneer, Standard

Rulings

(6/15/2010)
Annihilator abilities trigger and resolve during the declare attackers step. The defending player chooses and sacrifices the required number of permanents before they declare blockers. Any creatures sacrificed this way won't be able to block.
(6/15/2010)
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.
(12/7/2018)
Kozilek's first ability triggers as you cast it, and that ability resolves before the spell itself. It resolves even if the spell is countered.