Complete 12 original tasks, then you can request "Summoning the Master" then you can request "A Different Perspective". Finishing all of them and you get the bag.
Your guildmate Calidore has completed 13th Anniversary Tasks achievement . Calidore tells the guild, 'not bad reward for 13th anniv Satchel of the Superstitious'
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~ Muse Temperance the Elf ~ Lyricist of <Mystic Coercion> on Erollisi Marr ~ with a <Variety> of alts to keep me busy