What literary device does the author use to build irony in the story?

In “The Tiger King,” the author uses irony as a central literary device to build humor and critique human arrogance. The Maharaja’s relentless efforts to kill 100 tigers to defy a prophecy are ironic, as he believes he can control fate, yet his obsession leads to his downfall in an unexpected way. The final twist, where the Maharaja dies from a minor injury caused by a wooden tiger, is an example of situational irony, where the outcome is the opposite of what the character intended. The story thus humorously highlights the futility of trying to defy fate.

This question related to Chapter 2 English Vistas Class 12th NCERT.
From theChapter 2. The Tiger King.
Give answer according to your understanding.