Daenerys Targaryen’s dragons are not safe.

[Warning: The following contains spoilers for Game of Thrones’ seventh season.]

Heading into a great war with Cersei Lannister, Daenerys’ main weapon and security blanket has been her three dragons: Drogon, Rhaegal and Viserion. Up until the last few episodes, Daenerys didn’t have much to worry about when it came to her children. Her dragons struck fear into the hearts of every village they came across. Nothing was more powerful than her three dragon children. Daenerys used that intimidation factor to amass powerful armies and followers.

That has changed, though. During Daenerys’ battle with Jaime and his army, which saw the Dothraki massacre countless men and Drogon dive into battle to burn the rest, a terrifying weapon was revealed. The large, crossbow-like catapult allowed Bronn to load up a powerful spear and launch it directly at Drogon’s body. The first spear missed Drogon’s massive body, but the second one hit his side, causing the dragon to falter and crash toward the ground below.

As Drogon lay on the ground and Daenerys stood by him, Jaime made a dashing attack toward the queen, ready to take her out. His effort was unsuccessful, but it was the closest anyone had gotten in years to killing the queen and her dragon. Even though Daenerys escaped without harm and Drogon with just a scratch, the message was clear: The dragons are not as immune to harm as Daenerys and her team believed.

Cersei has been planning to kill Daenerys’ dragons for quite some time. As Qyburn told the queen in “Stormborn,” dragons are tough to kill but not invincible. Everything has been leading up to one of Daenerys’ children dying. The conversation has turned from debating the existence of dragons to coping with the fear of what their return signals and coming up with a plan of action to defeat them. Game of Thrones has become obsessed with dragons, and perhaps most importantly, how to kill one.

It’s the same obsession author George R.R. Martin has. In A Dance with Dragons, the most recent addition in Martin’s A Song of Ice and Fire series, Tyrion Lannister outlines what he believes the best way to kill a dragon is. Prior to A Song of Ice and Fire, Martin also wrote about the existence of ice dragons — or, as many believe, dragons that have risen from the dead. It’s not just likely that dragons will die at some point in Game of Thrones, it’s becoming increasingly likely that it will happen within the next two episodes as the seventh season comes to an end.

Daenerys can be reckless. She’s someone who doesn’t believe harm will ever fall upon her or the dragons and, as such, doesn’t think twice about sending them into battle. We saw what the result of this kind of tomfoolery looks like during her battle with Jaime. As Jon ventures beyond the Wall to take on the army of White Walkers headed toward them, the question is whether or not Daenerys will send a dragon to help him. It could be a dangerous decision — it’s her arrogance that will lead to both her and the dragons’ downfall.

Hopefully, Daenerys will be able to make it through the rest of Game of Thrones without losing one of her children. But if she doesn’t start second-guessing her war decisions and start looking out for the dragons a little more closely, it seems likely that she’ll lose one of them very soon.

Game of Thrones airs Sundays at 9 p.m. ET on HBO.