無限に廻るもの、ウラモグ

あなたが無限に廻るもの、ウラモグを唱えたとき、パーマネント１つを対象とし、それを破壊する。
破壊不能
滅殺４（このクリーチャーが攻撃するたび、防御プレイヤーはパーマネントを４つ生け贄に捧げる。）
無限に廻るもの、ウラモグがいずれかの領域から墓地に置かれたとき、そのオーナーは自分の墓地を自分のライブラリーに加えて切り直す。

无尽轮回钨拉莫

当你施放无尽轮回钨拉莫时，消灭目标永久物。
不灭
歼灭4（每当此生物攻击时，防御牌手牺牲四个永久物。）
当钨拉莫从任何区域置入坟墓场时，其拥有者将其坟墓场洗入其牌库。

Ulamog, the Infinite Gyre

When you cast this spell, destroy target permanent.
Indestructible
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents of their choice.)
When Ulamog is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

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When you cast this spell, destroy target permanent.
Indestructible
Annihilator 4 (Whenever this creature attacks, defending player sacrifices four permanents.)
When Ulamog, the Infinite Gyre is put into a graveyard from anywhere, its owner shuffles their graveyard into their library.

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.

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.

Lethal damage and effects that say "destroy" won't cause a creature with indestructible to be put into the graveyard. However, a creature with indestructible can be put into the graveyard for a number of reasons. The most likely reasons are if it's sacrificed, if it's legendary and another legendary creature with the same name is controlled by the same player, or if its toughness is 0 or less.

Ulamog's ability triggers as you cast it, and that ability resolves before the spell itself. It resolves even if that spell is countered.