Response to bad rng for moss knights. The wiggles are to go in and out of the moss knight's range so it can't attack you. You need to delay the fireballs a bit after breaking the rocks, else the first one can miss the further knight. Best to get close to the moss knight before firing to help that as well.
https://clips.twitch.tv/ArtsyTrustworthyFungusBuddhaBar-2ktJ8h7mWbMxl4MW
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