Yeah, it definitely survived my char, who at equally low level, bravely entered the same cavern once and found a red [ on the floor, only to be crited by an invisible stalker 2 tiles away from it.
Eternium two-handed sword upon entering SMC is my favorite rng moment and I always try to exploit it. While it's super rare, it's even rarer to find it with a prefix and/or suffix, much less with a useful one but I once got it with "of slaughtering". Good days.
"Hell is empty and all the devils are here."