fate had played its part : the hammer...

Fate: 命運
Fate had played its part: 命運在扮演它的角色。命運有甚麼戲份？命運弄人囉。
Played one's part: 亦解作有份參與。例: I have played my part in our winning of the championship.

相信回答者明白其意思亦正確. 只是譯文有錯 -- 不是命運在扮演它的角色, 而是命運*已經*插了一手.

命運在操控