Situational irony - Ingtar a Darkfriend
Ingtar and his Shienaran soldiers follow Rand and the crew in the quest for the Horn of Valere. He is a nobleman, sworn to protect Fal Dara, and is strangely more eager at retrieving the horn than the rest. The reason is revealed at the very end, he is a Darkfriend in disguise, but he decides to help Rand and others escape by sacrificing himself. The reveal that Ingtar is a Darkfriend is unexpected and makes situational irony in the novel.
Situational irony - Liandrin setting up a trap for Egwene and the rest
Liandrin, the Aes Sedai of the Red Ajah, makes a sudden request of Egwene and Nynaeve to leave the White Tower because Rand is in trouble and needs their help. Min and Elayne join them, and Liandrin leads them through the Ways to the Toman Head to hand them over to the Seanchan to be enslaved. The betrayal of the red Aes Sedai is somewhat unexpected and creates a situational irony in the novel.
Irony of Rand as the Dragon Reborn
Throughout the novel, Rand is expressing his refusal to accept being the Dragon Reborn and be used by the White Tower. Despite that, all of his actions lead him to this destiny, all the way to his battle with the Dark One in the sky. His intentions are not in accordance with his actions, and it makes his journey to becoming the Dragon Reborn ironic.
The irony of Damane and Suldam
The A’dam, the chained collar for enslaving the Aes Sedai, is revealed to be created by none other than an Aes Sedai. It is ironic that the same creator of it ended up wearing the collar herself at the end. It is also ironic that some women, who are in the position of suldam, are able to wield the One Power. Furthermore, it is a contraption made by a woman against women, the ultimate symbol of hatred amongst them.