Medb hErenn's confidence exceeds arrogance to border on hubris. Subconsciously, she truly believes she is invulnerable, due to her prodigious strength and endurance, and her profound magical abilities, and while far from foolhardy, she often leaps into dangerous situations without thinking. Worse still, her enemies can use this weakness against her, by luring her into traps through appeals to her curiosity or pride. Once she realizes she is in over her head, she may curse her short-sightedness, but when she extricates herself, her subconscious conceit reinforces itself and she learns little from her experience.

So when she heard of the deadly Upas Tree, which could kill anything that simply laid eyes on it, she had to see if it lived up to its reputation. She did not believe it would, but she also doubted it could harm her in any event.

Her companions often warn her that one day her overconfidence will be her undoing. Perhaps this is finally that day.