I'm surprised no one has said Sahagin's yet.

You think Sylphs are bad? Sahagin's are worse. Unlike Sylphs, going anywhere near the Sapsa grounds is guaranteed to aggro a few of them (Whereas Sylph had unpatrolled roads). Also, unlike sylphs that start casting, they just do their instant Water-Canon as soon as they see you. What's that, the first shot didn't slow you? its ok, they can fire like 3 more times before you are out of range.

I pity anyone who's already going into the tier 2 Sahagin quests.